1907 39.793 1908 42.892 1909 69.070 1910 43.653 1911 56.700 1912 45.990 1913 28.757 1914 32.889 1915 48.926 1916 48.491 1917 52.024 1918 56.265 1919 43.035 1920 43.653 1921 36.803 1922 52.242 1923 54.797 1924 77.575 1925 83.119 1926 59.309 1927 69.366 1928 76.161 1929 72.899 1930 71.269 1931 61.538 1932 62.571 1933 57.461 1934 51.590 1935 50.883 1936 60.885 1337 45.229 1938 51.970 1939 48.002 1940 41.369 1941 43.707 1942 35.063 1943 41.967 1944 35.118 1945 43.598 1946 54.195 1947 44.414 1948 58.983 1949 48.871 1950 53.275 1951 75.291 1952 58.624 1953 69.583 1954 73.497 1955 72.465 1956 48.001 1957 73.660