Year	Tonnes
1868	11.001
1869	18.335
1870	18.335
1871	25.669
1872	33.003
1873	40.337
1874	586.72
1875	1441.131
1876	1404.461
1877	1290.784
1878	1859.169
1879	2317.544
1880	2350.547
1881	2416.553
1882	2515.562
1883	2713.58
1884	2959.269
1885	3351.638
1886	3608.328
1887	4477.407
1888	5174.137
1889	6259.569
1890	6761.948
1891	8129.739
1892	8082.068
1893	8580.78
1894	11034.003
1895	12236.779
1896	12926.175
1897	13553.232
1898	17260.569
1899	17286.238
1900	19427.766
1901	23292.784
1902	24964.936
1903	25808.346
1904	29075.643
1905	29955.723
1906	32881.989
1907	35100.524
1908	37663.757
1909	38287.147
1910	39416.583
1911	44246.022
1912	49321.15
1913	54359.608
1914	58063.278
1915	52885.474
1916	58646.331
1917	67538.806
1918	71601.842
1919	79258.538
1920	74341.091
1921	66864.078
1922	71488.165
1923	75969.239
1924	79412.552
1925	82078.461
1926	82672.515
1927	89555.474
1928	92481.74
1929	94975.3
1930	86251.507
1931	77982.422
1932	78059.429
1933	91436.645
1934	101304.542
1935	106493.347
1936	116969.966
1937	125558.08
1938	131865.32
1939	127871.957
1940	153386.943
1941	154754.734
1942	147930.447
1943	150776.039
1944	138858.289
1945	76702.639
1946	52753.462
1947	70094.705
1948	88162.014
1949	98513.955
1950	102642.997
1951	123585.234
1952	130541.533
1953	145924.598
1954	142693.971
1955	142033.911
1956	160819.952
1957	188282.115
1958	181369.82
1959	192847.53
1960	232781.16
1961	283118.069
1962	293220.654
1963	325222.563
1964	359318.329
1965	386919.838
1966	419743.155
1967	489881.864
1968	562565.471
1969	653958.112
1970	768823.22
1971	797543.164
1972	853373.239
1973	915748.909
1974	915873.587
1975	870072.757
1976	908902.62
1977	935213.345
1978	903886.164
1979	955620.2
1980	947571.135
1981	929606.502
1982	900200.829
1983	883838.675
1984	940130.792
1985	915396.877
1986	915334.538
1987	905734.332
1988	989081.575
1989	1025549.89
1990	1096179.977
1991	1099381.268
1992	1123847.492
1993	1109887.223
1994	1173315.322
1995	1183447.243
1996	1204690.174
1997	1200788.486
1998	1157829.581
1999	1196516.431
2000	1220527.947
2001	1203377.388
2002	1220047.57
2003	1242093.574
2004	1266009.748
2005	1239255.316
2006	1231495.944
2007	1252229.162
2008	1210135.669
2009	1103869.676
2010	1171624.835
2011	1191074.603
2012	1230168.49
2013	1246515.976
2014	1214048.358