1911 43.8800 1912 55.1500 1913 61.9800 1914 41.4400 1915 55.5300 1916 75.1700 1917 75.2900 1918 69.6600 1919 60.9600 1920 67.6000 1921 29.4900 1922 47.1300 1923 69.3500 1924 54.2700 1925 61.9100 1926 67.6200 1927 61.7400 1928 62.2000 1929 73.0300 1930 58.4100 1931 31.1300 1932 9.85000 1933 17.5500 1934 24.5900 1935 30.5400 1936 48.7900 1937 72.0900 1938 28.4500 1939 51.7200