the table below shows the number of hours' delay experienced by commuters in different sized cities from between 1995 and 2015 (with predicted figures of 2025)

The graph illustrates the volume of CO2 emissions that 1 person emitted over a 40-year period from 1967 to 2007 in 4 European countries including the UK, Sweden, Italy and Portugal. Overall, what stood out from the graph was that while the United Kingdom and Sweden witnessed a decline, the number of tonnes of the emissions in Italy and Portugal experienced the opposite trend. The amount of CO2 emissions per capita in the UK accounted for 10. 3 metric tons in 1967. Then, the country was shown to have a gradual decrease by 2 metric tons to 8. 3 in 2007. Sweden, except for the increase of CO2 emissions per person from 1967 to 1977, also had a similarly down-ward trend by approximately 4 metric tons from about 8 to 5 from 1967 to 2007. Conversely, the figure was found to increase by 4 metric tons from about 4 to 8 over the course of 40 years in Italy. Having the similar trend to Italy’s in the same period of time, each person in Portugal tended to release more CO2 significantly, which was shown to increase by 4 metric tons from 1 to 5.