1931 1 . 1931 2 . 1931 3 . 1931 4 . 1931 5 . 1931 6 . 1931 7 13.5000 1931 8 14.3100 1931 9 13.1800 1931 10 11.1200 1931 11 7.46000 1931 12 6.02000 1932 1 6.08000 1932 2 5.79000 1932 3 8.14000 1932 4 10.3100 1932 5 11.7000 1932 6 12.5100 1932 7 14.7700 1932 8 15.9400 1932 9 14.5900 1932 10 11.1900 1932 11 9.10000 1932 12 6.91000 1933 1 7.86000 1933 2 7.65000 1933 3 8.09000 1933 4 9.38000 1933 5 12.6500 1933 6 18.8600 1933 7 21.4200 1933 8 22.8000 1933 9 21.5200 1933 10 19.3600 1933 11 13.4900 1933 12 10.4100 1934 1 10.7800 1934 2 10.4800 1934 3 8.72000 1934 4 12.3700 1934 5 15.0400 1934 6 17.9000 1934 7 18.1500 1934 8 21.4900 1934 9 19.0400 1934 10 21.0000 1934 11 17.3000 1934 12 15.5900 1935 1 13.4100 1935 2 16.2300 1935 3 24.7500 1935 4 26.7500 1935 5 27.0700 1935 6 31.2300 1935 7 34.0400 1935 8 35.7300 1935 9 32.0200 1935 10 28.7900 1935 11 20.8400 1935 12 23.0500 1936 1 18.9800 1936 2 18.1200 1936 3 31.7300 1936 4 30.3300 1936 5 40.0900 1936 6 40.2500 1936 7 44.3600 1936 8 43.1100 1936 9 43.5100 1936 10 44.4100 1936 11 42.8900 1936 12 37.9500 1937 1 21.3800 1937 2 26.1100 1937 3 34.5800 1937 4 33.1400 1937 5 42.0200 1937 6 47.2900 1937 7 50.8000 1937 8 51.9400 1937 9 54.2300 1937 10 49.1900 1937 11 34.7100 1937 12 31.2200 1938 1 32.4600 1938 2 34.3900 1938 3 43.5500 1938 4 44.4100 1938 5 48.8100 1938 6 47.5100 1938 7 50.8600 1938 8 56.4000 1938 9 54.8100 1938 10 56.8300 1938 11 46.0900 1938 12 41.5900 1939 1 38.4000 1939 2 35.0000 1939 3 49.4500 1939 4 53.4800 1939 5 63.3600 1939 6 70.2000 1939 7 72.9200 1939 8 75.1500 1939 9 75.8000 1939 10 77.4700 1939 11 67.0300 1939 12 71.5300 1940 1 61.3600 1940 2 58.9400 1940 3 80.6900 1940 4 88.0600 1940 5 100.040 1940 6 110.840 1940 7 112.380 1940 8 121.600 1940 9 118.530 1940 10 125.920 1940 11 90.7000 1940 12 78.3900 1941 1 78.3400 1941 2 84.6400 1941 3 96.6600 1941 4 114.750 1941 5 133.980 1941 6 141.910 1941 7 147.420 1941 8 158.070 1941 9 158.150 1941 10 150.920 1941 11 115.830 1941 12 111.080