Year	Tonnes
1950	220020
1951	502379
1952	975422
1953	1375125
1954	1895839
1955	2596236
1956	3762342
1957	4829439
1958	5570173
1959	6160560
1960	7022305
1961	7909719
1962	8474437
1963	9094160
1964	10194260
1965	11426372
1966	12937176
1967	14411310
1968	16252144
1969	17810619
1970	20205170
1971	22625390
1972	24330545
1973	26930448
1974	29713701
1975	32243931
1976	34634815
1977	36776343
1978	38320150
1979	39962966
1980	41965148
1981	43358608
1982	44623723
1983	45778828
1984	46985271
1985	48441070
1986	49845531
1987	51304997
1988	52812134
1989	54458617
1990	56042761
1991	57810255
1992	59394399
1993	61231566
1994	63211746
1995	65287268
1996	67483801
1997	69313634
1998	71125132
1999	73182319
2000	75415522
2001	77304027
2002	79709579
2003	82448828
2004	84979058
2005	87802648
2006	90523562
2007	93468163
2008	96335757
2009	99309694
2010	102852016
2011	106500681
2012	110131011
2013	114373730
2014	118664120