You should spend about 20 minutes on this task.
The graph below shows the population change between 1940 and 2000 in three different counties in the U.S. state of Oregon.
Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
You should write at least 150 words.
Population in the state of Oregon by County, 1940-2000 (in thousands)
The line graph compares the changes in population in three counties of Oregeon States of United States for 60 years’ time. Overall, the population in the Columbia, Yamhill and Washington counties rapidly increased after 1970 while Washington had far more population increase than the other two areas.
As is presented in the line graph, initially in 1940 population in Washington was 75 thousand which was largest compared to the populations of Yamhill (30 thousands) and Columbia (below 30 thousands. Till 1970 the population in these three counties increased steadily when population in Washington reached to over 120 thousand compared to 16 and 30 thousand in Columbia and Yamhill. After 1970 the population growth in these three areas rocketed and highest increment could be noticed in Washington with a total population of over 240 thousand. In this year population in Yamhill reached to 90 thousand compared to the least population in Columbia which was 75 thousand.