The charts compare the amount of carbon dioxide emissions released into the atmosphere by different income groups between 1990 and 2000, as well as these groups’ share in the proportion of world’s population in the year 2000.
Overall, carbon dioxide released by high income groups saw a slight downward trajectory over the years although they made up almost half of the world’s population. Of a particular note, middle income group exhibited higher levels of carbon emission, while low-income group showed produced a marginal amount of emission compared with their counterparts.
Starting with the amount of carbon emissions generated, high income group recorded 13 metric tonnes in 1990, following this, in 2000 it dropped into 12 metric tonnes with a negligible decrease, and it accounted for the largest share, 48% of global population compared with other groups. In contrast, middle income class contributed to the highest amount of carbon emission at 15 metric tonnes in 1990, and this figure experienced a significant amount of increase by 7, making it 22% metric tonnes in 2000, respectively. Even though it was dominant in the discharge of carbon dioxide, it constituted a third of the population of the world in 2000.
Turning to the remaining figure, low-income group represented the lowest share of carbon emission at 1 and 2 metric tonnes during a decade and represented the smallest share of the world’s population, at 18%, in 2000.
