Year	Tonnes
1830	3.46044
1831	4.15253
1832	2.76835
1833	3.46044
1850	21.45474
1855	65.05632
1858	91.35568
1859	96.89239
1860	128.03638
1861	162.6408
1862	146.72277
1863	153.64365
1864	172.33004
1865	164.71707
1866	520.45057
1867	597.2724
1868	496.91956
1869	674.09422
1870	731.53757
1871	987.61032
1872	1013.90969
1873	951.62172
1874	1155.09574
1875	1329.50205
1876	1650.63113
1877	1684.54346
1878	2201.53359
1879	2258.97694
1880	2650.00695
1881	2791.19301
1882	2939.99204
1883	3346.24801
1884	3397.46256
1885	3700.59733
1886	3795.41346
1887	4016.1897
1888	4189.21183
1889	4524.18267
1890	5123.53133
1891	5641.21355
1892	5971.33977
1893	6999.09123
1894	7128.51178
1895	8190.86767
1896	8338.28252
1897	9640.79312
1898	10812.49899
1899	12543.41238
1900	14209.26946
1901	14587.84188
1902	14089.53814
1903	13782.25084
1904	15333.91331
1905	13687.43471
1906	15612.13289
1907	17487.0007
1908	17594.27442
1909	18572.88759
1910	18214.38574
1911	18884.32743
1912	21391.76415
1913	23238.25633
1914	20973.05059
1915	19250.44226
1916	20517.65634
1917	18882.94325
1918	7530.61522
1919	6432.27073
1920	5865.45023
1921	6360.98561
1922	7757.62025
1923	8569.44009
1924	10209.68989
1925	10076.80889
1926	14600.29947
1927	18152.09777
1928	20166.07537
1929	21717.73784
1930	29525.18847
1931	35470.22887
1932	39963.26756
1933	44661.85654
1934	54023.73799
1935	61151.55769
1936	70121.71703
1937	71702.44721
1938	75678.49578
1939	76606.58648
1940	91841.53113
1941	80686.44833
1942	55529.03053
1943	70885.78276
1944	66387.89945
1945	70286.4341
1946	78990.83145
1947	95118.57029
1948	101217.25435
1949	115059.71689
1950	128255.07667
1951	139001.82724
1952	148851.6311
1953	157479.20662
1954	171995.0713
1955	195028.46942
1956	213830.43831
1957	233998.58995
1958	249767.13485
1959	262599.84024
1960	273407.49461
1961	281956.17204
1962	295925.97887
1963	317361.3446
1964	337514.27029
1965	358038.84752
1966	378108.72258
1967	395368.71825
1968	406476.73904
1969	423319.40533
1970	445250.99852
1971	472580.1901
1972	497306.43675
1973	518406.13954
1974	538249.70167
1975	565884.10429
1976	587714.65256
1977	607751.99946
1978	628655.8412
1979	633887.33835
1980	658874.50237
1981	646426.5982
1982	658648.88151
1983	668091.04522
1984	674103.91031
1985	727002.31236
1986	728987.91433
1987	759699.34253
1988	780576.8849
1989	764226.98564
1990	716534.47346
1991	690638.5972
1992	630929.352
1993	539335.026
1994	441767.157
1995	445943.87
1996	412335.815
1997	341196.015
1998	328636.54
1999	332549.229
2000	320902.837
2001	321775.583
2002	318687.969
2003	352431.703
2004	343396.215
2005	333876.683
2006	326429.006
2007	321258.536
2008	311023.939
2009	260100.31
2010	304643.359
2011	286392.7
2012	295791.221
2013	271875.047
2014	227298.995