1865 2.16000 1866 2.62000 1867 3.03000 1868 3.44000 1869 4.22000 1870 4.92000 1871 5.57000 1872 6.42000 1873 7.48000 1874 7.73000 1875 7.84000 1876 8.74000 1877 8.75000 1878 10.6800 1879 13.0700 1880 14.4800 1881 16.0600 1882 16.2300 1883 17.0900 1884 16.8100 1885 17.8300 1886 18.7200 1887 22.1600 1888 22.6400 1889 22.4400 1890 25.2700