The line graph illustrates the information of citizens living in the state of Oregon by county.
portrays the information about the population in
as Columbia, Yamhill and Washington during the years 1940-2000, measured in thousands.
, it can be seen that Washington has shown a dramatic increase compared to the other two provinces, which shows a parallel
During the year 1940,
was reported at 75,000 which, escalated moderately to around 130 thousand within
, after that year, there was a rapid rise in the birth rate observed year between 1970 to 2000 , which accounted for 240,000 people at the highest.
On the other hand
, Columbia and Yamhill had shown collateral development in the
rate. In the first
decades, it was noted around 32 and 45 thousand in Columbia and Yamhill respectively.
, after that in the following
decades it showed sustainable
which consisted of 60 and 70,000 respectively.