Table:
text: Economic history of the United States
Relief
Relief
Table_2_Depression_Data _1929 _1931 _1933 _1937 _1938 _1940
Real Gross National Product (GNP) 1 101.4 84.3 68.3 103.9 103.7 113.0
Consumer Price Index 2 122.5 108.7 92.4 102.7 99.4 100.2
Index of Industrial Production 2 109 75 69 112 89 126
Money Supply M2 ($ billions) 46.6 42.7 32.2 45.7 49.3 55.2
Exports ($ billions) 5.24 2.42 1.67 3.35 3.18 4.02
Unemployment (% of civilian work force) 3.1 16.1 25.2 13.8 16.5 13.9

Question: What is the sum of the 1938 values if the 1933 values are less than 68.3 and the 1940 values are less than 4.02 for the economic history of the United States?

Question: What is the average value in 1940, where the 1929 values are 101.4 and the 1933 values are above 68.3, in the economic history of the United States?

Question: What is the highest 1937 reading that has a 1940 reading above 126 in United States economic history?