Group 1, 1980-1990.
Item 1, Low education (below the nonmetro median high school completion rate) 6.5.
Item 2, High education (above the nonmetro median high school completion rate) 3.1.
Group 2, 1990-2000.
Item 1, Low education (below the nonmetro median high school completion rate) -3.3.
Item 2, High education (above the nonmetro median high school completion rate) 8.7.