Year Tonnes
1830 0.61322
1831 0.73587
1832 0.49058
1833 0.61322
1850 3.80199
1855 11.52861
1858 16.18912
1859 17.17028
1860 22.68929
1861 28.82154
1862 26.0007
1863 27.22715
1864 30.53856
1865 29.18947
1866 92.22891
1867 105.84249
1868 88.05899
1869 119.45607
1870 129.63559
1871 175.01417
1872 179.67468
1873 168.63664
1874 204.69422
1875 235.60072
1876 292.50792
1877 298.51752
1878 390.13321
1879 400.31273
1880 469.60706
1881 494.6266
1882 520.99524
1883 592.98776
1884 602.06348
1885 655.78191
1886 672.58425
1887 711.70795
1888 742.36916
1889 801.72926
1890 907.93968
1891 999.67802
1892 1058.1796
1893 1240.30718
1894 1263.24176
1895 1451.50158
1896 1477.62492
1897 1708.4425
1898 1916.0802
1899 2222.81492
1900 2518.02103
1901 2585.10775
1902 2496.80347
1903 2442.34917
1904 2717.31888
1905 2425.54682
1906 2766.6221
1907 3098.86695
1908 3117.8769
1909 3291.29669
1910 3227.76666
1911 3346.48686
1912 3790.82908
1913 4118.04549
1914 3716.62896
1915 3411.36598
1916 3635.92866
1917 3346.24157
1918 1334.49841
1919 1139.86106
1920 1039.41494
1921 1127.22864
1922 1374.72591
1923 1518.5883
1924 1809.25655
1925 1785.70874
1926 2587.31536
1927 3216.72863
1928 3573.62509
1929 3848.5948
1930 5232.15114
1931 6285.67024
1932 7081.88048
1933 7914.51624
1934 9573.53287
1935 10836.65198
1936 12426.25164
1937 12706.37243
1938 13410.96699
1939 13575.43371
1940 16275.21437
1941 14298.42499
1942 9840.28538
1943 12561.65153
1944 11764.58278
1945 12455.44111
1946 13997.94515
1947 16855.93765
1948 17936.6839
1949 20389.70317
1950 22728.04952
1951 24632.47845
1952 26377.95969
1953 27906.85015
1954 30479.20284
1955 34560.94546
1956 37892.83759
1957 41466.83061
1958 44261.17044
1959 46535.2509
1960 48450.47258
1961 49965.38154
1962 52440.96745
1963 56239.52316
1964 59810.818
1965 63447.97311
1966 67004.55056
1967 70063.19
1968 72031.63954
1969 75016.32415
1970 78902.8162
1971 83745.81529
1972 88127.54717
1973 91866.62014
1974 95383.09274
1975 100280.1782
1976 104148.7641
1977 107699.57725
1978 111403.94173
1979 112331.01401
1980 116758.98299
1981 114553.09306
1982 116719.00077
1983 118392.2442
1984 119457.7825
1985 128831.89487
1986 129183.76289
1987 134626.12727
1988 138325.83124
1989 135428.46976
1990 126976.8918
1991 122387.89016
1992 111806.83
1993 116232.899
1994 108664.211
1995 103435.069
1996 106170.651
1997 107234.081
1998 119144.497
1999 123035.184
2000 121828.741
2001 123453.222
2002 128348.667
2003 127142.224
2004 126214.473
2005 117248.658
2006 120288.601
2007 120200.593
2008 123900.596
2009 107131.405
2010 104168.469
2011 113684.334
2012 115814.861
2013 103354.395
2014 105213.564