The graph below shows the population change between 1940 and 2000 in three different counties in the US state of Oregon.

The line graph shows how the population in three 1countiescountries in the state of Oregon in the USA changed between 1940 and 2000. 2Overall, Washington had far higher population than Columbia and Yamhill and the population growth between 1980 and 2000 was considerably higher. In 1940, the population of Columbia was 3about 25 thousandaround 28 thousand, 4the smallest ofthe lowest among the three counties 5in Oregonin the Oregon state. Yamhill had a population of 630 thousand, while30 thousand while Washington had 775 thousand, the highest figure75 thousand inhabitants, the highest among these counties. By 1970, Yamhill’s 8population had increased by 50%population increased by 50% while Columbia 9experiencedwitnessed about 10a 40% population increase40% population increase 11over the previous three decadesduring the last three decades. 12At that time, Washington’s population reached to nearly 125 thousand which was somewhat double than the population of Yamhill and Columbia together in this year. 13Finally, in 2000, Columbia and Yamhill accommodated roughly 90 and 80 thousand citizens, a noticeable growth than that of the last three decades. 14In 2000, Washington'sIn this year, Washington’s population 15reached approximatelyreached to approximately 250 thousand, 16more than doublemore than double than 17its 1970 figurethat of 1970’s.