The graph below shows average carbon dioxide emissions per person in the United Kingdom, Sweden, Italy and Portugal between 1967 and 2007

The line graph represents the amount of 4 countries in Europe produce CO2 emissions from the year 1967 to 2007. Units are measured in metric tones. Overall, it is noticeable that United Kingdom discharge the most carbon dioxide to the atmosphere while it steady decreasing over time. However, the number of carbon dioxide release in Italy and Portugal are continually increasing. Focusing on the UK and Sweden, the statistical data shows that both countries have high emission rate in the year 1967, which are around 11 metric tonnes and approximately 9 metric tonnes, respectively. Furthermore, United Kingdom decrease the rate continually. On the contrary, Sweden has fluctuated increasing to the highest rate around 10 metric tonnes in 1977 and dramatically decrease for a decade. After 1987, Sweden’s emission rate start to steadily decrease. Turning to Italy and Portugal, they are likely increase at the constant rate over the period of time. In addition, Portugal(approximately 1. 5 metric tonnes) has lower starting number than Italy, which is around 4 metric tonnes. However, the discharge rate of carbon for Portugal and Sweden are equally in the year 2007.