Year	Tonnes
1830	11.40082
1831	13.68098
1832	9.12066
1833	11.40082
1850	70.68509
1855	214.33543
1858	300.98166
1859	319.22298
1860	421.83036
1861	535.83857
1862	483.39479
1863	506.19643
1864	567.76086
1865	542.67906
1866	1714.68341
1867	1967.78163
1868	1637.15783
1869	2220.87984
1870	2410.13346
1871	3253.79418
1872	3340.44042
1873	3135.22565
1874	3805.5939
1875	4380.19525
1876	5438.1914
1877	5549.91944
1878	7253.20203
1879	7442.45565
1880	8730.74837
1881	9195.90185
1882	9686.13713
1883	11024.59346
1884	11193.32561
1885	12192.03749
1886	12504.41997
1887	13231.79232
1888	13801.83335
1889	14905.43277
1890	16880.05489
1891	18585.61764
1892	19673.25592
1893	23059.29962
1894	23485.69031
1895	26985.74222
1896	27471.41717
1897	31762.68603
1898	35623.00386
1899	41325.69429
1900	46814.0493
1901	48061.29907
1902	46419.58091
1903	45407.18805
1904	50519.31598
1905	45094.80557
1906	51435.94195
1907	57612.90652
1908	57966.33196
1909	61190.484
1910	60009.359
1911	62216.55785
1912	70477.59242
1913	76561.07026
1914	69098.09313
1915	63422.76467
1916	67597.74515
1917	62211.99752
1918	24810.46566
1919	21191.84522
1920	19324.39082
1921	20956.98832
1922	25558.35949
1923	28232.99199
1924	33636.98092
1925	33199.18941
1926	48102.34202
1927	59804.14423
1928	66439.42178
1929	71551.54971
1930	97274.08101
1931	116860.6907
1932	131663.51609
1933	147143.55022
1934	177987.33011
1935	201470.74026
1936	231023.94727
1937	236231.84209
1938	249331.38489
1939	252389.08496
1940	302582.33747
1941	265830.65237
1942	182946.68705
1943	233541.24844
1944	218722.4619
1945	231566.62632
1946	260244.25031
1947	313378.91452
1948	333471.72064
1949	379077.28297
1950	422550.89185
1951	457957.28012
1952	490408.57571
1953	518833.10148
1954	566657.26348
1955	642543.40516
1956	704488.62348
1957	770934.88576
1958	822886.1448
1959	865164.94769
1960	900771.9904
1961	928936.57746
1962	974961.68998
1963	1045582.93274
1964	1111979.0314
1965	1179599.57819
1966	1245722.05716
1967	1302587.06985
1968	1339183.70379
1969	1394673.77752
1970	1466929.89794
1971	1556969.01824
1972	1638432.44133
1973	1707947.80449
1974	1773324.6698
1975	1864369.34247
1976	1936292.55893
1977	2002307.87018
1978	2071177.94691
1979	2088413.7074
1980	2170736.75236
1981	2129725.72071
1982	2169993.41886
1983	2201101.69778
1984	2220911.76355
1985	2395191.54683
1986	2401733.33765
1987	2502915.61995
1988	2571699.05043
1989	2517832.45354
1990	2360704.06469
1991	2275387.16426
1992	2078668.286
1993	1938445.873
1994	1698378.384
1995	1631473.969
1996	1612966.62
1997	1526011.049
1998	1495505.276
1999	1531130.181
2000	1557899.281
2001	1557506.912
2002	1557085.207
2003	1604242.827
2004	1602115.967
2005	1615089.813
2006	1669262.404
2007	1666886.188
2008	1714978.893
2009	1574045.082
2010	1670531.186
2011	1763405.295
2012	1830830.424
2013	1778561.006
2014	1705345.684