Year Tonnes
1802 6402.582
1830 6200.897
1831 4466.406
1832 4719.429
1833 4569.082
1834 4411.401
1835 4763.433
1836 5603.176
1837 6002.879
1838 6127.557
1839 6714.277
1840 7733.703
1841 7396.339
1842 7686.032
1843 7117.647
1844 7807.043
1845 8225.081
1846 8973.149
1847 9325.181
1848 8291.087
1849 8742.128
1850 9339.849
1851 10175.925
1852 11419.038
1853 11796.739
1854 13069.188
1855 13388.217
1856 13223.202
1857 13765.918
1858 14462.648
1859 14910.022
1860 15225.384
1861 16472.164
1862 16358.487
1863 17242.234
1864 18096.645
1865 19075.734
1866 20546.201
1867 22251.356
1868 20117.162
1869 21668.303
1870 24766.918
1871 23736.491
1872 25610.328
1873 28129.557
1874 25936.691
1875 26952.45
1876 26340.061
1877 25071.279
1878 27260.478
1879 27755.523
1880 30450.768
1881 30656.12
1882 32463.951
1883 34411.128
1884 33897.748
1885 33109.343
1886 32130.254
1887 33996.757
1888 36083.28
1889 36864.351
1890 39856.623
1891 37810.437
1892 37759.099
1893 36105.282
1894 39863.957
1895 40164.651
1896 42313.513
1897 43780.313
1898 45122.435
1899 47164.954
1900 49706.185
1901 46746.916
1902 48895.778
1903 52672.788
1904 50391.914
1905 50307.573
1906 57542.564
1907 58371.306
1908 57894.596
1909 57810.255
1910 61337.909
1911 61737.612
1912 64828.893
1913 68070.521
1914 40608.358
1915 34447.798
1916 45830.166
1917 36277.631
1918 33751.068
1919 44906.082
1920 55199.351
1921 50575.264
1922 55954.753
1923 71942.873
1924 76317.604
1925 78103.433
1926 77747.734
1927 90549.231
1928 88330.696
1929 97047.155
1930 93761.523
1931 84201.654
1932 67777.161
1933 72723.944
1934 75026.82
1935 71708.185
1936 75074.491
1937 90384.216
1938 79196.199
1939 73780.04
1940 62155.65
1941 65239.597
1942 61128.89
1943 57901.93
1944 33168.015
1945 38789.526
1946 56464.466
1947 82107.797
1948 85140.406
1949 80850.016
1950 76277.267
1951 89540.806
1952 83548.928
1953 82459.829
1954 85822.468
1955 92111.373
1956 96878.473
1957 96585.113
1958 87773.312
1959 88400.369
1960 91000.272
1961 92793.435
1962 98117.919
1963 105781.949
1964 103662.423
1965 105440.918
1966 105206.23
1967 107472.436
1968 118557.777
1969 123618.237
1970 125620.419
1971 121528.047
1972 130834.893
1973 138872.957
1974 135220.625
1975 122100.099
1976 130009.818
1977 126570.172
1978 135855.016
1979 140233.414
1980 135301.299
1981 124021.607
1982 117553.019
1983 101630.905
1984 105422.583
1985 104472.83
1986 102874.018
1987 103116.04
1988 100354.789
1989 107461.435
1990 106049.64
1991 110959.753
1992 111968.178
1993 107652.119
1994 112334.878
1995 112327.544
1996 118059.065
1997 115341.818
1998 118374.427
1999 114260.053
2000 115118.131
2001 114527.744
2002 107311.088
2003 112914.264
2004 111102.766
2005 108510.197
2006 107072.733
2007 103545.079
2008 104443.494
2009 99863.411
2010 110824.074
2011 99944.085
2012 95107.312
2013 96970.148
2014 93350.819