premise: For example in figure 4.1, although federal government saving increased as a share of GDP by 5.5 percentage points from 1990 to 2000, net national saving increased by only 1.1 percentage points because private saving as a share of GDP decreased by 4.9 percentage points over the same period.
hypothesis: Over the period from 1990 to 2000 individual savings rose by a tremendous 100%.