The Population Change

The line graph potrays change of population betwen three periods 1940 and 2000 in Columbia, Yamhill and Wahington part of US State of Oregon.
Overall, the biggest number of population from 1940 to 2000 showed in Washington, while Yamhill and Columbia ilustrated similar changes, they presented moderately rise of population from three periods. Meanwhile the lowest number of population showed by Columbia from 1940 to 2000.

In the third decades showed number of population in Washington was moderatly increased from 75.000 to arround 120.000. Although Yamhill ilustrated slightly rised number of population by 15.000, and Columbia showed minimal increased from just under 30.000 to 30.000.

1970 and 2000 showed dramatically increase in the number of population in Washingthon from arround 120,000 to just under 255,000. The figures for population in Yamhill ilustrated slightly increased by 30,000 in 1970 to 2000, also Columbia depict slighty rise between 30,000 to arround 60,000 persons.