Green Economics and Management

The Index of Sustainability

The Ideal Indicator

The ideal tool includes all the components that were discussed in our research. We believe that the conventional GDP does not take the social and environmental aspects into account in a sufficient manner. In our indicator, we would like to apply more weight to these aspects. Therefore we have decided on the following weights:

Weight given to the subparts of our new indicator
Subpart Weight
Economic 25%
Social 35%
Environmental 40%

Each of these three different aspects has subcomponents. We have attempted to rank the different subcomponent to reflect what we would like to highlight in a greener indicator.

The economic subcomponents with weights:

Weight of the whole indicator given to the economic subparts
Subpart
Weight
1. Inflation rate 6.25%
2. Purchasing power parity 6.25%
3. Unemployment rate
3.75 %
4. Number of people below poverty line per capita income 3.75 %
5. Interest rates 2.5%
6. Public deficits 2.5%

Within the economic aspect it is good to remember that especially inflation rate and incomes and purchasing power are linked. Number of people below poverty line per capita income is not included in existing GDP. However, in our indicator we also want to emphasize the social aspects such as the distribution of wealth within a country. Deficits are included in the indicator with a smaller weight as this component does not affect the daily life of people directly.

Social subcomponents with weights:

Subpart Weight
1. Life expectancy at birth 7%
2. Infant mortality rate 7%
3. Health quality 5.25%
4. Education level 5.25%
5. Crime rate 1.75%
6. Suicide rate 1.75%
7. Property level 1.75%
8. Full-time/Part-time jobs 1.75%
9. Relationship status 1.75%
10. Size and strenght of social networks 1.75%


The three most important subcomponents of the social aspect are about the standard of living. Health quality depends on how governments spend on public health infrastructure. In the social aspect the subcomponents are indicators often used to compare the well-being in countries. However, we have also included indicators that are seldom seen but still significant such as property level, suicide rate and size and strength of social networks.

Environmental subcomponents with weights:

Weight of the wholegiven to the environmental subparts
Subpart Weight
1. Ecological Footprint 20%
2. Water Accessibility & Quality 10%
3. Air Quality 6%
4. Energy consumption component 4%

The ecological footprint is given the most weight in our indicator because it is the most comprehensive indicator that encompasses all the different types of energy consumption. The water accessibility and quality in addition to air quality are important indicators that are linked to health issues. Even though it is sometimes difficult to monitor these two subcomponents, we hope that by including them to the indicator we will encourage interest in these fields as they still are significant.

Simpler tool

Components Weight
Purchasing power parity 0,125
Inflation rate 0,125
Expected years on schooling children by years 0,0315
Number of people who get tertiary diploma 0,0315
Health quality 0,07
Crimes rate 0,028
Life expectancy 0,0805
Infant mortality 0,0805
Suicide rate 0,028
Ecological footprint 0,2
Air pollution 0,06
Water consumption 0,1
Energy consumption 0,04
Total 1

List of the components we keep in the simplified indicator:

Number / proportion of people under the poverty line

  • Purchasing power parity
  • Inflation rate
  • Education level
  • Health quality
  • Crimes rate
  • Life expectancy at birth
  • Infant mortality
  • Suicide rate
  • Ecological footprint
  • Air quality
  • Water accessibility, consumption and quality
  • Energy consumption: (energy consumption divided by production level of the 2nd year) divided by (energy consumption divided by production level of the 1st year)

The way of calculating:

We will create a table in which all the previous components are listed. Then, we will allocate a weight to each component according to their importance for wellbeing. The total must be equal to 1. The highest the weight is, the more important is the component.

For each country and each component we will give a figure between 1and 5, 5 is the best. Finally, we multiply the weight by the score for each component to have the total. The best country is the one which has the better score.

Let see the example of country X:

Components Weight Score Total
Suicide rate 0.25 1 0.25
Ecological footprint 0.25 5 1.25
Air quality 0.5 3 1.5
Total 1 9 3

Here, the more important component is the air quality. The suicide rate is average, so not very good. However, the ecological footprint is high, so there is in this country a real respect of the environment. The total is 3. It has to be compared with those of the other countries.

How to allocate scores for each component?

Purchasing power parity

We will use the figures given by the OECD. The more recent are those of 2009. Their table gives each national currency per US dollar. Concretely, it means that one dollar in the USA is equal to x$ in another country.

For example, the PPP in Australia in 2009 is 1, 50$. In other words, what you buy for 1$ in the USA, you buy it for 1, 50 $ in Australia. Consequently, people in Australia have less purchasing power.

5 4 3 2 1
0<PPP<2* 3<PPP<5* 6<PPP<10* 11<PPP<20* ppp<21*

* In dollar.1

Inflation rate

We still base our analysis on the figures of the OECD. Their table provides data on inflation rate in percentage change over previous period. Hence, the figures of 2010 give the percentage of inflation compared to 2009.

5 4 3 2 1
-1 or +1* -2 or +2* -3 or +3* -4 or +4* Every rate under -5 and +5*

* In points of percentage.2

Education level

As in the HID, we take into account the expected years of schooling of children by years.3

5 4 3 2 1
+17 years 16-14 13-10 9-3 -2years

And we will also take the number of people who get tertiary diploma. We take the percentage of graduates divided by the population at the typical age of graduation.4

5 4 3 2 1
+60% 59-40% 39-30% 29-21% 20%

Health quality

Source: OCDE 2007. It gives the public social expenditure as a percentage of GDP. For instance, in 2007 the percentage in Belgium is 7.3. it means that Belgium spent 7.3% of its GDP in social expenditures.5

5 4 3 2 1
+7* 6-7* 4-5* 2-3* -2*

* In percentage of the GDP.

Crimes rate

The table of Eurostats about crimes is very comprehensive. It gives the number of crimes recorded by the police during a year. We divide then this number by the number of inhabitants in order to balance it for each country, and we multiply the figure by 100.6

5 4 3 2 1
-2* 2-5* 6-9* 10-20* +20*

* In percentage of population.

Life expectancy at birth

We use the figures of 2008, the last ones provided by the OCDE. Its table shows the number of year a newborn can expect to live in a given country if the living conditions do not change.7

5 4 3 2 1
81-90* 71-80* 61-70* 51-60* 0-50*

* In years.

Infant mortality

Source: OCDE, figures of 2008. Here is the number of children who died before the age of one /the total of newborns. The figure is given for 1000 births.8

5 4 3 2 1
0-5* 6-15* 16-30* 31-50* +51*

* In number of children.

Suicide rate

Source: OCDE, figures of 2007. We have in this table the number of suicides per 100 000 population.9

5 4 3 2 1
0-5* 6-10* 11-15* 16-20* +20*

* In number of deaths.

Ecological footprint per capita

Units: Hectares per Person, Source: Living Planet Report 200010

5 4 3 2 1
0-3 4-5 6-8 9-10 +10

Air pollution

The OECD gives the emissions per capita in kg of four traditional pollutants in 2005. We add the four figures to obtain the total amount of pollutants emitted per capita.11

5 4 3 2 1
0-70 71-100 101-150 151-200 +200

Water consumption

Here is the consumption of water by country in million m3. Source: OECD 200712

5 4 3 2 1
0-9.000 10.000-20.000 21.000-30.000 31.000-70.000 +70.000

Energy consumption

We measure the improvements made in the energy consumption between two years by calculating the variation rate according to the following formula:

A= energy consumption of year N / GDP of year N

B= energy consumption of year N+1/GDP of year N+1

E=Variation rate of the energy consumption= (B-A/A)*100

5 4 3 2 1
-15%<E -14%<E<-5% -4%<E<0 0<E<5% 5%<E

Implications in the example countries

USA

Component Weight Score TOTAL
Economical Components
Purchasing Power Parity 0.125 5 0.625
Inflation Rate 0.125 4 0.5
Social Components
Life Expectancy at Birth 0.0805 4 0.322
Infant Mortality 0.0805 4 0.322
Expected years on shooling children by years 0.0315 4 0.126
Number of people who get a tertiary diploma 0.0315 3 0.0945
Health quality 0.07 5 0.35
Crime rate 0.028 4 0.112
Suicide Rate 0.028 4 0.112
Environmental Components
Ecological footprint 0.20 1 0.20
Air quality 0.10 1 0.10
Water accessibility, consumption and quality 0.06 1 0.06
Energy consumption 0.04 1 0.04
TOTAL (maximum score: 5/5) 100% 2.96

France

Component Weight Score TOTAL
Economical Components
Purchasing Power Parity 0.125 5 0.625
Inflation Rate 0.125 4 0.5
Social Components
Life expectancy at birth 0.0805 5 0.4025
Infant mortality 0.0805 5 0.4025
>Expected years on schooling children by years 0.0315 4 0.126
Number of people who get a tertiary diploma 0.0315 4 0.126
Health quality 0.07 5 0.35
Suicide Rate 0.028 3 0.084
Crime Rate 0.028 3 0.084
Environmental Components
Ecological Footprint 0.20 3 0.60
Air Quality 0.1 3 0.30
Water Accessibility, Consumption, and Quality 0.06 2 0.12
Energy consumption 0.04 3 0.12
TOTAL (maximum score: 5/5) 100% 3.84

Mexico

Component Weight Score TOTAL
Economical Components
Purchasing Power Parity 0.125 3 0.375
Inflation Rate 0.125 2 0.25
Social Components
Life expectancy at birth 0.0805 4/td> 0.322
Infant mortality 0.0805 4 0.322
Expected years on schooling by years 0.0315 3 0.0945
Number of people who get a tertiary diploma 0.0315 3 0.0945
Health quality 0.07 2 0.14
Suicide Rate 0.028 5 0.14
Crime rate 0.028 4 0.112
Environmental Components
Ecological Footprint 0.20 5 1
Air Quality 0.10 3 0.3
Water Accessibility, Consumption, and Quality 0.06 1 0.06
Energy consumption 0.04 4 0.16
TOTAL (maximum score: 5/5) 100% 3.37

From these tables, the following may be deduced:

  • With a score of 2.96/5, on the basis of our criteria, the United States is well-ranked in economic terms, but is not very efficient in environmental terms.
  • With a score of 3.84/5, France is quite performant in economic terms, better than the US in the social and environmental issues.
  • With a score of 3.37/5, Mexico is better-ranked than the US and achieves a quite a good score on environmental aspects.

This seems to be relatively faithful to the actual situation today, as long as more weight is given to the social/human and environmental dimensions.

In 2010, the International Monetary Fund ranked these countries on the basis of the GDP as follows:

  • United States: 10th rank in the world
  • France: 18th rank
  • Mexico: 61st rank.

Therefore our "sustainability index" disrupts the traditional rankings of countries.

References

  1. <http://stats.oecd.org/Index.aspx?datasetcode=SNA_TABLE4>^
  2. <http://tiny.booki.cc/?oecd-inflation-rate>^
  3. <http://hdrstats.undp.org/en/indicators/69706.html>^
  4. <http://tiny.booki.cc/?oecd-tertiary-education>^
  5. <http://tiny.booki.cc/?oecd-public-health-spending>^
  6. <http://tiny.booki.cc/?eurostat-crimes-recorded>^
  7. <http://tiny.booki.cc/?oecd-life-expectancy-birth>^
  8. <http://tiny.booki.cc/?oecd-infant-mortality>^
  9. <http://tiny.booki.cc/?oecd-social-issues-suicide>^
  10. <http://tiny.booki.cc/?nationmaster-eco-footprint>^
  11. <http://tiny.booki.cc/?oecd-statistics-a-z>^
  12. <http://tiny.booki.cc/?oecd-water-abstractions>^

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