The line graph depicts the total amount of emissions released by carbon dioxide (CO2) each person in four different European countries from 1967 to 2007. Overall, while others experienced varying tonnes, the UK maintained its dominance in the quantity of CO2 emissions despite following a moderate decline at the end.
Although the amount of emissions showed a sharp growth in Portugal, it still remained the lowest compared to other countries. Starting at about 1.6 metric tonnes in 1967, the figure of CO2 emissions increased dramatically to around 5.7 metric tonnes in 1997, before reaching its highest point to around 5.8 tonnes of metric in 2007. After a period of steep rise from 4.2 metric tonnes to 6.2 metric tonnes in 1977, the emissions of CO2 saw a continuous growth to roughly 7.9 metric tonnes in Italy, then it saw a stagnation by the end.
Turning to the United Kingdom, it held the balance of the highest over the given period. The weight of CO2 emissions was around 10.2 metric tonnes in the initial year and it witnessed a rapid decline to 8.3 metric tonnes in 2007, after remaining unchanged in 1977. The weight of CO2 emissions accounted for approximately 8.3 metric tonnes in 1967 in Sweden, then it faced a significant upward trend to around 10.1 metric tonnes ten years later. Then that weight highlighted 7 metric tonnes, showing a staggering decline in 1977 and until the end of the period this amount declined continuously to about 5.7 metric tonnes.