The graph below shows average carbon dioxide emissions per person in the United Kingdom, Sweden, Italy and Portugal between 1967 and 2007. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The line chart illustrates amount of carbon dioxide exhusted by unit person measured in metrictonnes in average in the four countries(UK, Sweden, Italy as well as Portugal) from 1967 to 2007. The statistical curves represent, nevertheless, supreme amount of the gas left by Britain in the year 1967(more than 10 metric tonnes), in contrast, in the same year Portugal was lowest (below 2 metric tonnes). In addition, the trend of UK was fell slowly upto 2007. Hence there was not a rapid change of emission of the gas in Britain in the following years. According to the report, although, there was a sudden increase of leaving carbon dioxide in Sweden upto 1977, alternatively, it depleted later. That was became approximately same value in 1977 in both of Sweden and United Kingdom. Furthermore, nearly 1987 both Sweden and Italy became same amount, as both of the trend intersected that time. In conclusion, though a Swedish spent second maximum to expel the gas such as in 1977, on the contrary, it became third position in 1997 among the mentioned countries.