Year	Tonnes
1946	634.16507
1947	655.81949
1948	723.87623
1949	1027.03807
1950	5361.01497
1951	6620.06464
1952	6991.28322
1953	7115.02275
1954	7226.38832
1955	7446.02598
1956	8822.62821
1957	9116.50958
1958	10236.35229
1959	9933.19045
1960	11940.86427
1961	12364.67214
1962	13586.59996
1963	15619.02168
1964	16058.297
1965	16850.22996
1966	17147.20482
1967	18198.9908
1968	20868.67107
1969	20240.69298
1970	20531.48086
1971	19467.32094
1972	18929.054
1973	20036.488
1974	21418.947
1975	23219.444
1976	22838.076
1977	24389.217
1978	26138.376
1979	28250.568
1980	32067.915
1981	34400.127
1982	37385.065
1983	40303.997
1984	42856.229
1985	47175.955
1986	49453.162
1987	53534.533
1988	58213.625
1989	60956.541
1990	68565.566
1991	68242.87
1992	72789.95
1993	78008.091
1994	84839.712
1995	84484.013
1996	94447.252
1997	94711.276
1998	97663.211
1999	100384.125
2000	106449.343
2001	108282.843
2002	114084.037
2003	118895.141
2004	131601.296
2005	136636.087
2006	146074.945
2007	158894.777
2008	159070.793
2009	158836.105
2010	161395.671
2011	161956.722
2012	163496.862
2013	164325.604
2014	166298.45