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The image consists of a line graph titled "River Water Quality in the UK," depicting the percentage of river water with good chemical quality from 1990 to 2002 across four regions: Wales, Northern Ireland, England, and Scotland. In 1990, Wales had 75%, Northern Ireland had 45%, England had 70%, and Scotland had 80%; in 1992, Wales had 75%, Northern Ireland had 45%, England had 65%, and Scotland had 85%; in 1994, Wales had 85%, Northern Ireland had 45%, England had 75%, and Scotland had 90%; in 1996, Wales had 85%, Northern Ireland had 65%, England had 85%, and Scotland had 85%; in 1998, Wales had 90%, Northern Ireland had 45%, England had 85%, and Scotland had 85%; in 2000, Wales had 95%, Northern Ireland had 55%, England had 85%, and Scotland had 85%; in 2002, Wales had 95%, Northern Ireland had 65%, England had 90%, and Scotland had 80%.
Given the complexity of the image, the above description may not be entirely accurate.
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The line graph illustrates information about the proportion of people aged 65 and over in three countries (Japan, the USA and Sweden) over a 100-year period from 1940 to 2040.
Overall, what stands out from the graph is that the proportion of elderly people in the three countries increased over the period. It can be easily seen that Japan, which had the lowest percentage in 1940, is projected to have the highest figure by 2040.
Looking at the details, the proportion of the USA’s elderly population was at its peak, at around 15%, while Sweden stood at about 10% and Japan with just 5%. Both the USA and Sweden experienced a steady growth between 1940 and 2000, achieving around 20% in the number of elderly citizens. Alternatively, Japan’s trend stayed relatively stable until the late 1980s before showing a slight rise at the end of the period.
From 2000 onwards, the proportion of elderly people in both the USA and Sweden is planned to continue rising gradually, reaching around 25% and 23% respectively by 2040, whereas after 2030 Japan is predicted to experience a sharp increase, overtaking the other two countries and peaking at 27%.
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