1914 1 . 1914 2 . 1914 3 . 1914 4 . 1914 5 . 1914 6 . 1914 7 . 1914 8 . 1914 9 . 1914 10 . 1914 11 0.230000 1914 12 0.250000 1915 1 0.260000 1915 2 0.280000 1915 3 0.280000 1915 4 0.290000 1915 5 0.290000 1915 6 0.290000 1915 7 0.300000 1915 8 0.310000 1915 9 0.330000 1915 10 0.340000 1915 11 0.380000 1915 12 0.400000 1916 1 0.430000 1916 2 0.440000 1916 3 0.450000 1916 4 0.440000 1916 5 0.470000 1916 6 0.510000 1916 7 0.550000 1916 8 0.530000 1916 9 0.530000 1916 10 0.540000 1916 11 0.580000 1916 12 0.620000 1917 1 0.710000 1917 2 0.710000 1917 3 0.740000 1917 4 0.800000 1917 5 0.870000 1917 6 1.11000 1917 7 1.34000 1917 8 1.27000 1917 9 1.25000 1917 10 1.39000 1917 11 1.61000 1917 12 1.62000 1918 1 1.63000 1918 2 1.61000 1918 3 1.64000 1918 4 1.69000 1918 5 1.71000 1918 6 1.79000 1918 7 1.73000 1918 8 1.71000 1918 9 1.78000 1918 10 1.83000 1918 11 1.81000 1918 12 1.80000 1919 1 1.83000 1919 2 1.86000 1919 3 1.95000 1919 4 1.88000 1919 5 1.94000 1919 6 1.94000 1919 7 1.96000 1919 8 1.91000 1919 9 1.93000 1919 10 1.98000 1919 11 2.01000 1919 12 1.99000 1920 1 2.03000 1920 2 2.00000 1920 3 2.03000 1920 4 2.00000 1920 5 1.99000 1920 6 1.97000 1920 7 1.91000 1920 8 1.89000 1920 9 1.91000 1920 10 1.87000 1920 11 1.83000 1920 12 1.82000 1921 1 1.82000 1921 2 1.80000 1921 3 1.80000 1921 4 1.75000 1921 5 1.72000 1921 6 1.72000 1921 7 1.70000 1921 8 1.69000 1921 9 1.72000 1921 10 1.73000 1921 11 1.73000 1921 12 1.76000 1922 1 1.80000 1922 2 1.81000 1922 3 1.79000 1922 4 1.82000 1922 5 1.88000 1922 6 1.89000 1922 7 1.88000 1922 8 1.86000 1922 9 1.87000 1922 10 1.88000 1922 11 1.89000 1922 12 1.89000 1923 1 1.98000 1923 2 1.97000 1923 3 1.96000 1923 4 1.94000 1923 5 1.95000 1923 6 1.93000 1923 7 1.92000 1923 8 1.89000 1923 9 1.91000 1923 10 1.92000 1923 11 1.94000 1923 12 1.93000 1924 1 1.98000 1924 2 1.95000 1924 3 1.99000 1924 4 2.00000 1924 5 1.98000 1924 6 2.06000 1924 7 2.11000 1924 8 2.14000 1924 9 2.19000 1924 10 2.21000 1924 11 2.22000 1924 12 2.26000 1925 1 2.28000 1925 2 2.23000 1925 3 2.19000 1925 4 2.18000 1925 5 2.19000 1925 6 2.21000 1925 7 2.20000 1925 8 2.21000 1925 9 2.21000 1925 10 2.27000 1925 11 2.29000 1925 12 2.28000 1926 1 2.29000 1926 2 2.27000 1926 3 2.28000 1926 4 2.25000 1926 5 2.25000 1926 6 2.24000 1926 7 2.26000 1926 8 2.25000 1926 9 2.27000 1926 10 2.28000 1926 11 2.28000 1926 12 2.29000 1927 1 2.30000 1927 2 2.27000 1927 3 2.28000 1927 4 2.30000 1927 5 2.33000 1927 6 2.36000 1927 7 2.34000 1927 8 2.33000 1927 9 2.35000 1927 10 2.38000 1927 11 2.43000 1927 12 2.44000 1928 1 2.47000 1928 2 2.42000 1928 3 2.41000 1928 4 2.45000 1928 5 2.44000 1928 6 2.39000 1928 7 2.37000 1928 8 2.33000 1928 9 2.37000 1928 10 2.38000 1928 11 2.40000 1928 12 2.42000 1929 1 2.44000 1929 2 2.41000 1929 3 2.38000 1929 4 2.37000 1929 5 2.35000 1929 6 2.37000 1929 7 2.38000 1929 8 2.37000 1929 9 2.40000 1929 10 2.44000 1929 11 2.58000 1929 12 2.44000 1930 1 2.40000 1930 2 2.36000 1930 3 2.37000 1930 4 2.41000 1930 5 2.42000 1930 6 2.46000 1930 7 2.48000 1930 8 2.45000 1930 9 2.45000 1930 10 2.46000 1930 11 2.49000 1930 12 2.47000 1931 1 2.49000 1931 2 2.43000 1931 3 2.44000 1931 4 2.44000 1931 5 2.44000 1931 6 2.48000 1931 7 2.51000 1931 8 2.57000 1931 9 2.56000 1931 10 2.50000 1931 11 2.32000 1931 12 2.24000 1932 1 2.13000 1932 2 2.01000 1932 3 1.98000 1932 4 2.10000 1932 5 2.25000 1932 6 2.17000 1932 7 2.09000 1932 8 2.15000 1932 9 2.27000 1932 10 2.38000 1932 11 2.45000 1932 12 2.51000 1933 1 2.60000 1933 2 2.41000 1933 3 2.10000 1933 4 2.28000 1933 5 2.35000 1933 6 2.46000 1933 7 2.52000 1933 8 2.61000 1933 9 2.71000 1933 10 2.81000 1933 11 2.86000 1933 12 2.83000 1934 1 3.00000 1934 2 3.04000 1934 3 3.55000 1934 4 3.82000 1934 5 4.01000 1934 6 4.13000 1934 7 4.21000 1934 8 4.31000 1934 9 4.28000 1934 10 4.23000 1934 11 4.31000 1934 12 4.36000 1935 1 4.62000 1935 2 4.85000 1935 3 4.89000 1935 4 4.97000 1935 5 5.12000 1935 6 5.33000 1935 7 5.46000 1935 8 5.53000 1935 9 5.58000 1935 10 5.83000 1935 11 6.06000 1935 12 6.32000 1936 1 6.55000 1936 2 6.60000 1936 3 6.52000 1936 4 6.49000 1936 5 6.55000 1936 6 6.57000 1936 7 6.69000 1936 8 6.78000 1936 9 6.84000 1936 10 6.98000 1936 11 7.07000 1936 12 7.06000 1937 1 7.22000 1937 2 7.21000 1937 3 7.18000 1937 4 7.23000 1937 5 7.27000 1937 6 7.30000 1937 7 7.27000 1937 8 7.25000 1937 9 7.39000 1937 10 7.50000 1937 11 7.53000 1937 12 7.51000 1938 1 7.71000 1938 2 7.82000 1938 3 7.89000 1938 4 8.70000 1938 5 9.28000 1938 6 9.26000 1938 7 9.26000 1938 8 9.24000 1938 9 9.24000 1938 10 9.57000 1938 11 9.78000 1938 12 9.99000 1939 1 10.3100 1939 2 10.4800 1939 3 10.7000 1939 4 11.1200 1939 5 11.4800 1939 6 11.7000 1939 7 11.8000 1939 8 12.0600 1939 9 12.7800 1939 10 12.9500 1939 11 12.9100 1939 12 12.8300 1940 1 13.2600 1940 2 13.5500 1940 3 13.7300 1940 4 14.0100 1940 5 14.4000 1940 6 14.9100 1940 7 15.4400 1940 8 15.7400 1940 9 15.9600 1940 10 16.1400 1940 11 16.1900 1940 12 16.1000 1941 1 16.3600 1941 2 16.3300 1941 3 16.3600 1941 4 16.2700 1941 5 16.1900 1941 6 16.0400 1941 7 15.8400 1941 8 15.6700 1941 9 15.5000 1941 10 15.5300 1941 11 15.3400 1941 12 14.9300 1942 1 14.7900 1942 2 14.5800 1942 3 14.3900 1942 4 14.2700 1942 5 14.2300 1942 6 14.0900 1942 7 14.2000 1942 8 14.2000 1942 9 13.8700 1942 10 13.9300 1942 11 14.1600 1942 12 14.6700 1943 1 14.9000 1943 2 14.3200 1943 3 14.4300 1943 4 14.2900 1943 5 13.7900 1943 6 13.7400 1943 7 14.3600 1943 8 14.4800 1943 9 14.7000 1943 10 14.1800 1943 11 14.3400 1943 12 15.1400 1944 1 15.3100 1944 2 14.5400 1944 3 14.7000 1944 4 14.8200 1944 5 15.2000 1944 6 15.8200 1944 7 15.1200 1944 8 15.1700 1944 9 15.6400 1944 10 15.6900 1944 11 16.3600 1944 12 16.4300 1945 1 16.0800 1945 2 16.2100 1945 3 16.1900 1945 4 16.6400 1945 5 17.1100 1945 6 17.4100 1945 7 16.9400 1945 8 17.0800 1945 9 17.5200 1945 10 17.5100 1945 11 17.8100 1945 12 17.9000 1946 1 17.8500 1946 2 17.7900 1946 3 17.5100 1946 4 17.1000 1946 5 17.3600 1946 6 17.7400 1946 7 17.8800 1946 8 17.8800 1946 9 17.8900 1946 10 17.5600 1946 11 17.9000 1946 12 17.9200 1947 1 18.1700 1947 2 18.7500 1947 3 18.4500 1947 4 17.7100 1947 5 17.5800 1947 6 17.6600 1947 7 18.0800 1947 8 18.5200 1947 9 18.4300 1947 10 18.9300 1947 11 19.2900 1947 12 19.2400 1948 1 19.5300 1948 2 19.1400 1948 3 19.2600 1948 4 19.1400 1948 5 19.2300 1948 6 19.7700 1948 7 20.3100 1948 8 20.4400 1948 9 20.7600 1948 10 22.3700 1948 11 22.3800 1948 12 22.4400 1949 1 22.2200 1949 2 22.3400 1949 3 21.6800 1949 4 21.4800 1949 5 . 1949 6 . 1949 7 . 1949 8 . 1949 9 . 1949 10 . 1949 11 . 1949 12 .