1928 1 93.1000 1928 2 93.5000 1928 3 95.6000 1928 4 101.100 1928 5 102.900 1928 6 104.000 1928 7 102.900 1928 8 103.700 1928 9 104.300 1928 10 103.700 1928 11 100.700 1928 12 94.5000 1929 1 90.8000 1929 2 88.6000 1929 3 95.5000 1929 4 103.500 1929 5 105.900 1929 6 106.800 1929 7 106.200 1929 8 106.200 1929 9 105.600 1929 10 104.400 1929 11 101.500 1929 12 94.8000 1930 1 92.6000 1930 2 91.3000 1930 3 93.3000 1930 4 96.2000 1930 5 98.1000 1930 6 97.6000 1930 7 96.5000 1930 8 95.6000 1930 9 94.8000 1930 10 93.0000 1930 11 89.9000 1930 12 83.8000 1931 1 80.0000 1931 2 78.8000 1931 3 80.7000 1931 4 84.8000 1931 5 87.1000 1931 6 87.4000 1931 7 86.0000 1931 8 83.8000 1931 9 82.3000 1931 10 80.1000 1931 11 76.9000 1931 12 71.3000 1932 1 69.2000 1932 2 68.3000 1932 3 68.6000 1932 4 71.8000 1932 5 73.0000 1932 6 73.2000 1932 7 73.1000 1932 8 73.1000 1932 9 73.5000 1932 10 74.0000 1932 11 72.8000 1932 12 68.6000 1933 1 65.8000 1933 2 66.1000 1933 3 69.8000 1933 4 72.8000 1933 5 75.5000 1933 6 76.2000 1933 7 77.0000 1933 8 78.6000 1933 9 79.7000 1933 10 80.5000 1933 11 80.3000 1933 12 76.1000 1934 1 77.5000 1934 2 80.0000 1934 3 84.2000 1934 4 87.8000 1934 5 89.1000 1934 6 89.0000 1934 7 89.0000 1934 8 89.1000 1934 9 89.5000 1934 10 89.6000 1934 11 . 1934 12 .