the graph below shows average carbon dioxide emissions per person

The graph provides the information about normal carbon dioxide emissions per person in the United Kingdom, Sweden, Italy and Portugall from 1967 to 2007. Overall, the CO2 emissions were higher than those of other countries in the United Kingdom, following this further, Portugal and Italy possessed escalating line relatively other states, besides that, Sweden began most number of tones, however, we can see that, it decreased markedly, later on. It is obvious that, firstly, the most of CO2 emissions indicated in the United Kingdom that was approximately 11 tonnes in 1967, subsequently, this figure showed downward trend and less than nine metric tones in 2007, secondly, Sweden gave out roughly 8. 3 metric tonnes per person in 1967, however, this number reduced markedly in 2007 which equalled with Portugal line in 2007, furthermore, Italy and Portugal had a regular increase and both reached its peak in 2007 that they were nearly 8 and 6 respectively.