Over the Past Century in Canada, by How Much Has

Multiple Choice

Over the past century in Canada, by how much has average income grown as measured by real GDP per person?

A) about 1 percent per year, which implies a doubling about every 70 years
B) about 2 percent per year, which implies a doubling about every 35 years
C) about 3.5 percent per year, which implies a doubling about every 20 years
D) about 4 percent per year, which implies a doubling about every 17.5 years