The line graph compares information about the amount of CO2 emissions per individual in Singapore, China, Thailand and Vietnam, over a 35-year period between 1975 and 2010. Units are measured in metric tonnes per capita.
Overall, it is evident that the average carbon emissions per person in all four countries showed an upward trend throughout the given duration. It is also noticeable that the figure for Singapore was significantly higher than those in the other countries.
The personal CO2 emission rate in Singapore stood at around 11 in the first year, after which it fluctuated slightly and peaked at about 14 in 1990. The figure then fell twofold to approximately 7 in 2005 before increasing exponentially and bounced back to the initial figure in the final year.
In contrast, the amount of Carbon emissions per capita in China and Thailand were similar (around 1) in 1975 and then climbed gradually during the next 20 years. The amount then remain unchanged until 2000 before growing steadily in the last year. Despite the slight growth from 1995 to 2010, carbon dioxide emissions per capita in Vietnam remained almost stable in previous years and hovered around 1.