The line graph illustrates the population in the state of Oregon by county during the period from 1940 to 2000. Overall, while the three Counties exhibited different trends over the given period, they all experienced an overall upward trajectory.
However, the pace of growth varied, with some Counties showing a more rapid increase than others. As the graph shows, in 1940, the population of Colombia stood at approximately 25, 000, then rose steadily to reach almost 75, 000 by 2000.
Similarly, Yamhill began at 30, 000 in 1940 and maintained an upward, to just around 90, 000 by 2000. However, both figures continued to follow the same general pattern until the end of the period. By contrast, Washington commenced at 75, 000 in 1940.
Subsequently, it climbed dramatically to slightly over 240, 000 by 2000.