80%
70%
60%
50%
The graph to the left is called a line graph. It is a lot
like the trend lines you drew on the bar charts. As
with the other charts, start by reading the title,
looking at the axes, and reading the legend.
2. What major change does the chart show for the
100-year period?
40%
30%
20%
10%
0%
Agriculture (farming)
Non-Agriculture
Source: Stanley Lebergott, Manpower in Economic