The graph below shows average carbon dioxide(C02) emissions per person in the United Kingdom, Sweden, Italy and Portugal between 1967 and 2007. Summerise the information by selecting and reporting the main features, and make comparisons where relevant.

The provided chart illustrates the average carbon dioxide (CO2) greenhouse gas per individual in the United Kingdom, Sweden, Italy, and Portugal over a span of 40 years, from 1967 to 2007. From the graph, it is evident that the United Kingdom started the period with the highest emissions, peaking at approximately 11 metric

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per person in 1977 before showing a marked downward tendency to almost 9 metric

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by 2007. Sweden, having begun with relatively high emissions of nearly 10 metric

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per individual in 1967, witnessed a significant and consistent decrease over the years, culminating in roughly 5.5 metric

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in 2007, which represents the most substantial proportional reduction among the four countries examined.

On the other hand

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, Italy showed a different trend; starting at about 4 metric

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per person in 1967, it saw a gradual increase until the mid-1990s, peaking at around 7.5 metric

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, and

subsequently

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decreasing to slightly under 7 metric

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by 2007. It is noteworthy that Portugal, which had the lowest starting point at under 2 metric

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per individual in 1967, experienced a steady rise in CO2 emissions throughout the period, reaching practically 5 metric

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by 2007.