Year Keynes Market Rate
1928 -3.4    7.9   4.2
1929  0.8    6.6   5.3 
1930 -32.4 -20.3   2.5
1931 -24.6 -25.0   3.6
1932 44.8   -5.8   1.5
1933 35.1   21.5   0.6
1934 33.1   -0.7   0.7
1935 44.3    5.3   0.5
1936 56.0    10.2  0.6
1937 8.5    -0.5   0.6
1938 -40.1 -16.1   0.6
1939 12.9   -7.2   1.3
1940 -15.6 -12.9   1.0
1941 33.5   12.5   1.0
1942 -0.9    0.8   1.0
1943 53.9   15.6   1.0
1944 14.5    5.4   1.0
1945 14.6    0.8   1.0