The chart shows the proportion of working age adults in four countries from 1980 to 2015.

The line graph illustrates the workers with different ages in four areas between 1960 and 2015. As can be seen, there are many fluctuations from year to year we can identify some upward and downward trends. Plus,

differences

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between the figures were not large. In 1960, Germany began the period higher than other nations at approximately 67 before showing a fluctuation and peaking at 70 after three decades,

then

demonstrated a gradual decline until the end of the period. Japan displayed a similar pattern, but it did not fluctuate at the beginning

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and started at nearly 65,

then

also

peaked at 70.

Although

it showed a steady fall in the remaining time, there were some curved trends. As for France and the USA, in principle they showed the same changes if we compare only their trends, starting at 62 and 60 respectively. Between 1980 and 2010, during

this

time both figures fluctuated. After that, they presented a stable decline as all figures in

this

timeframe.

In addition

, the figure for the USA finished the span higher than others,

although

it started lower than all.