Year	Tonnes
1867	168682
1868	253023
1869	447374
1870	649059
1871	946086
1872	1122102
1873	1316453
1874	1466800
1875	1631815
1879	1635482
1883	1639149
1888	1642816
1892	2013183
1893	2339546
1894	2673243
1895	2984938
1896	3358972
1897	3722005
1898	4184047
1899	4426069
1900	4844107
1901	5262145
1902	5595842
1903	5995545
1904	6351244
1905	6629936
1906	6890293
1907	7319332
1908	8049065
1909	8610116
1910	9328848
1911	10234597
1913	11573052
1914	11584053
1915	11606055
1916	11672061
1917	11763736
1918	11888414
1919	11994757
1920	12673152
1921	13417553
1922	14095948
1923	15016365
1924	16314483
1925	18294663
1926	20117162
1927	22434706
1928	24810922
1929	27517168
1930	30373761
1931	33105676
1932	35789920
1933	38092796
1934	40927387
1935	43842652
1936	47212625
1937	50802618
1938	53648210
1939	53901233
1940	54139588
1941	54275267
1942	54502621
1943	54715307
1944	54825317
1945	54891323
1946	55016001
1947	55184683
1948	56537806
1949	58180622
1950	62313331
1951	66893414
1952	71697184
1953	76588962
1954	81678758
1955	87641300
1956	93937539
1957	100761826
1958	108220504
1959	116353910
1960	125759765
1961	135583658
1962	145748582
1963	158007363
1964	171230565
1965	188256446
1966	206906808
1967	226440917
1968	248761946
1969	274236595
1970	298402125
1971	326216320
1972	357789190
1973	395045910
1974	431264869
1975	470138736
1976	513049970
1977	560049909
1978	608131613
1979	659425609
1980	710855284
1981	761577228
1982	813725635
1983	869269684
1984	926324537
1985	986925379
1986	1046055754
1987	1109527857
1988	1177517704
1989	1251701114
1990	1325979866
1991	1400042265
1992	1475542128
1993	1551254677
1994	1629163759
1995	1707945587
1996	1788186881
1997	1871904491
1998	1959655801
1999	2046292343
2000	2137908671
2001	2231714198
2002	2325384046
2003	2421122082
2004	2518271913
2005	2616947216
2006	2714232726
2007	2812478990
2008	2908444380
2009	3000387071
2010	3084244027
2011	3164085618
2012	3244128894
2013	3313611210
2014	3380929996