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

The line graph provides data about the

population

change between 1940 and 2000 in three different counties in the U.S. state of Oregon.

Overall

, in all years

Washington

had the highest

population

,

whereas

Columbia

had the lowest

population

. As can clearly be seen,

Initially

, the

population

of

Washington

was 75000 which had the highest

population

, meanwhile, the

population

of

Yamhill

was 30000 and the

population

of

Columbia

was less than 30000. From 1940 to 1970 the figure of individuals in

Washington

rose abruptly,

whereas

the numbers of people in

Yamhill

and

Columbia

increased gradually. In 1970, the

population

of

Washington

was more or less 127000,

while

the

population

of

Yamhill

was 45000 and the

population

of

Columbia

was roughly 37000. From 1970 to 2000 the number of individuals in

Columbia

,

Yamhill

and

Washington

rose. In 2000 the

population

of

Washington

reached its peak accounting for 247000. In 2000 the

population

of

Yamhill

was 90000 meanwhile, the

population

of

Columbia

was 75000. In 2000

Washington

had the highest

population

,

whereas

Columbia

had the lowest

population

.