Year	Tonnes
1785	3.667
1786	3.667
1787	3.667
1788	3.667
1789	3.667
1790	3.667
1791	3.667
1792	3.667
1793	3.667
1794	3.667
1795	3.667
1796	3.667
1797	3.667
1798	3.667
1799	3.667
1800	3.667
1801	3.667
1802	3.667
1803	3.667
1804	3.667
1805	3.667
1806	3.667
1807	3.667
1808	3.667
1809	3.667
1810	3.667
1811	3.667
1812	3.667
1813	3.667
1814	3.667
1815	3.667
1816	3.667
1817	3.667
1818	3.667
1819	3.667
1820	3.667
1821	3.667
1822	3.667
1823	3.667
1824	3.667
1825	3.667
1826	3.667
1827	3.667
1828	3.667
1829	3.667
1830	3.667
1831	3.667
1832	3.667
1833	3.667
1834	3.667
1835	3.667
1836	3.667
1837	3.667
1838	3.667
1839	3.667
1840	3.667
1841	3.667
1842	3.667
1843	3.667
1844	3.667
1845	3.667
1846	25.669
1847	33.003
1848	40.337
1849	47.671
1850	58.672
1851	69.673
1852	84.341
1853	102.676
1854	124.678
1855	150.347
1856	179.683
1857	216.353
1858	264.024
1859	315.362
1860	381.368
1861	458.375
1862	561.051
1863	704.064
1864	843.41
1865	1019.426
1866	1243.113
1867	1595.145
1868	946.086
1869	685.729
1870	1224.778
1871	1782.162
1872	1848.168
1873	1609.813
1874	1624.481
1875	1877.504
1876	1859.169
1877	2024.184
1878	1936.176
1879	2185.532
1880	5236.476
1881	5595.842
1882	6622.602
1883	7436.676
1884	8606.449
1885	8250.75
1886	8804.467
1887	10157.59
1888	13322.211
1889	11301.694
1890	12423.796
1891	13952.935
1892	13901.597
1893	14866.018
1894	14191.29
1895	13542.231
1896	14660.666
1897	14811.013
1898	15720.429
1899	19185.744
1900	20645.21
1901	23864.836
1902	25669
1903	27982.877
1904	33124.011
1905	35415.886
1906	37418.068
1907	47029.275
1908	47447.313
1909	45423.129
1910	51664.363
1911	60318.483
1912	67326.12
1913	79346.546
1914	68437.221
1915	61165.56
1916	76519.289
1917	85312.755
1918	89592.144
1919	76152.589
1920	84447.343
1921	80549.322
1922	69265.963
1923	93057.459
1924	77447.04
1925	75309.179
1926	84825.044
1927	92074.703
1928	93860.532
1929	99119.01
1930	94432.584
1931	75917.901
1932	70267.054
1933	69540.988
1934	79980.937
1935	78862.502
1936	86236.839
1937	93563.505
1938	85617.116
1939	95085.31
1940	108715.549
1941	120255.598
1942	131190.592
1943	138179.894
1944	140526.774
1945	130633.208
1946	138542.927
1947	143673.06
1948	158645.421
1949	145150.861
1950	154270.69
1951	162822.134
1952	159551.17
1953	160753.946
1954	163115.494
1955	169628.086
1956	189976.269
1957	182983.3
1958	182326.907
1959	184655.452
1960	192895.201
1961	194182.318
1962	207185.5
1963	211109.19
1964	237801.283
1965	252153.921
1966	259319.239
1967	281896.958
1968	303539.592
1969	307400.943
1970	341485.708
1971	352607.719
1972	381136.979
1973	381621.023
1974	389970.782
1975	397143.434
1976	399317.965
1977	408151.768
1978	415896.472
1979	442067.851
1980	443233.957
1981	430003.421
1982	414811.04
1983	408687.15
1984	425595.687
1985	422079.034
1986	405053.153
1987	431349.21
1988	456053.789
1989	463274.112
1990	435181.225
1991	426780.128
1992	440978.752
1993	445580.837
1994	456849.528
1995	467637.842
1996	479419.913
1997	495294.356
1998	506533.711
1999	515389.516
2000	534380.909
2001	527926.989
2002	519335.208
2003	553100.944
2004	552198.862
2005	557417.003
2006	543819.767
2007	554355.058
2008	561028.998
2009	536764.459
2010	534670.602
2011	537112.824
2012	517457.704
2013	517160.677
2014	537193.498