1914 1 13.5200 1914 2 13.9400 1914 3 13.8600 1914 4 13.7800 1914 5 13.7600 1914 6 13.7300 1914 7 13.7200 1914 8 13.7200 1914 9 13.7200 1914 10 13.5600 1914 11 13.3000 1914 12 13.3200 1915 1 13.2900 1915 2 13.2800 1915 3 13.2700 1915 4 13.2600 1915 5 13.2900 1915 6 13.3600 1915 7 13.5300 1915 8 14.6900 1915 9 15.4600 1915 10 15.6900 1915 11 16.4200 1915 12 18.3100 1916 1 19.1800 1916 2 19.0800 1916 3 19.4400 1916 4 19.4700 1916 5 19.3800 1916 6 19.3200 1916 7 19.3000 1916 8 19.2800 1916 9 19.6000 1916 10 21.1800 1916 11 26.6400 1916 12 31.6200 1917 1 31.7800 1917 2 32.0600 1917 3 34.4500 1917 4 39.9000 1917 5 42.9300 1917 6 51.1000 1917 7 54.1400 1917 8 52.4600 1917 9 45.4800 1917 10 34.7100 1917 11 34.7100 1917 12 34.7100 1918 1 34.7100 1918 2 34.7100 1918 3 34.7100 1918 4 33.8400 1918 5 33.8400 1918 6 33.9400 1918 7 34.0800 1918 8 34.0800 1918 9 34.0800 1918 10 34.7600 1918 11 34.7600 1918 12 34.7600 1919 1 31.7600 1919 2 31.7600 1919 3 30.5700 1919 4 27.5100 1919 5 27.4700 1919 6 27.3400 1919 7 27.3400 1919 8 27.5100 1919 9 27.5800 1919 10 27.6500 1919 11 30.1600 1919 12 36.0400 1920 1 39.2600 1920 2 42.6300 1920 3 42.4500 1920 4 43.1700 1920 5 43.9000 1920 6 44.5900 1920 7 46.2500 1920 8 48.3900 1920 9 49.2000 1920 10 46.1500 1920 11 38.9900 1920 12 35.4800 1921 1 32.1800 1921 2 29.4200 1921 3 26.2500 1921 4 24.9600 1921 5 24.0300 1921 6 22.7700 1921 7 21.1800 1921 8 20.1700 1921 9 20.7300 1921 10 20.7700 1921 11 20.6000 1921 12 20.2500 1922 1 19.7300 1922 2 19.4100 1922 3 19.4700 1922 4 21.1000 1922 5 25.0600 1922 6 25.5400 1922 7 25.0300 1922 8 27.9900 1922 9 33.6000 1922 10 32.5100 1922 11 29.7700 1922 12 26.8600