The given table illustrates the demography growth, average birth per woman, and life expectancy at birth among high, middle, and low-income countries between 2002 and 2004.
Overall, life expectancy showed an increase in all groups of countries, whereas population growth and average birth per woman demonstrated either a decrease or remained unchanged.
As can be clearly seen from the graph, population growth was in low-income countries at 2.0% in 2002, which was the highest among the given three groups of countries. But after that, this figure declined by 0.2 percent in 2004. The other two groups of countries showed almost similar population growth in both of the given years.
In high-income countries, the average birth rate was 1.7 in 2002, which was the lowest percentage among the other groups of countries, and it remained constant until 2004. The other two groups of countries showed a downward trend. In both of these countries, the average proportion of births decreased from 2.2 to 2.1 and from 3.9 to 3.7 between 2002 and 2004.
The life expectancy at birth was the highest in high-income countries, at 78.0 in 2002. Then, this number increased by 0.7 by 2004. Similarly, life expectancy rose from 69.1 to 70.0 in middle-income countries and from 58.1 to 58.8 in low-income countries over the given period.