The graph on the left shows that as time progresses the fertility rate in Canada has decreased from 5.72 to 1.63.

The graph on the right shows that as time progresses the GDP in Canada has increased from 1,310 to 60,500.

The graph on the left shows that as time progresses the fertility rate in Mexico has decreased from 6.8 to 1.74.

The graph on the right shows that as time progresses the GDP in Mexico has increased from 1,560 to 25,800.

The graph on the left shows that as time progresses the fertility rate in the United States has decreased from 7.03 to 1.91.

The graph on the right shows that as time progresses the GDP in the United States has increased from 1,980 to 80,000.