Area

1

The average number of years a new-born is expected to live in a country

Population

2

The total value of all domestic and foreign output of a country divided by the total population and expressed in US dollars

Birth rate

3

The percentage of the total population who live in cities

Death rate

4

The percentage of the total population who are under 15 years of age

Life expectancy

5

The percentage of the total population who live far from cities

Infant mortality rate

6

The percentage of the total population who can read and write

Average daily food availability

7

The land enclosed within the borders of a country in kilometers squared

Literacy rate

8

The number of live births per thousand people per year

Urban population

9

The number of deaths of children under one year of age per thousand live births

Rural population

10

The number of deaths per thousand people per year

Population under the age of 15 years

11

The total number of people in a country

GNP per capita.

12

The number of kilojoules of energy available to the average person each day