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

the line graph reveals information about average emissions of carbon dioxide(CO2) per individual in four different countries from 1967 to 2007. The countries are United Kingdom, Sweden, Portugal and Italy. Between 1967 to 1977, there was minimally declination in emissions of CO2 per person in UK where as in other three countries situation was opposite. Firstly, the Sweden reached a high of over 10 metric tonnes of CO2 emissions. The emission of CO2 was significantly increased over 6 metric tonnes in Italy whereas it moderately grew in protugal. After 1997, the discharge of CO2 was slowly came down in UK and also it was sharply declined in Sweden till 1987. In Italy and Portugal emission if CO2 was slightly increasing till 1987. From 1987 to 2007 the amount of CO2 emission was modestly declined and approximately it reached a same level of CO2 emission that Sweden had in 1967. In Italy emission of CO2 was moderately increased till 1977 afterwards it remained stable till 2007. In Portugaldischarge of CO2 was rapidly increase whereas in Sweden it was sharplly decrease from 1987 to 2007. The Sweden and the Portugal reached a same peak of CO2 emission(nearly 6 metric tonnes). Overall, there was continuous increment in emission of CO2 in Italy and Portugal and it was constant in Italy during 1997-2008. Besides in UK and Sweden there was continuous fall-down in CO2 emission till the last given year.