Year	Tonnes
1946	117.56993
1947	121.58451
1948	134.20177
1949	190.40593
1950	993.89603
1951	1227.31536
1952	1296.13678
1953	1319.07725
1954	1339.72368
1955	1380.44302
1956	1635.65579
1957	1690.13942
1958	1897.75071
1959	1841.54655
1960	2213.75573
1961	2292.32686
1962	2518.86404
1963	2895.66132
1964	2977.1
1965	3123.91904
1966	3178.97618
1967	3373.9702
1968	3868.91093
1969	3752.48802
1970	3806.39814
1971	3609.11006
1972	3509.319
1973	4554.414
1974	4660.757
1975	4869.776
1976	5570.173
1977	5812.195
1978	6017.547
1979	6648.271
1980	7638.361
1981	7931.721
1982	8599.115
1983	8236.082
1984	9123.496
1985	10234.597
1986	11463.042
1987	11862.745
1988	13545.898
1989	13454.223
1990	15533.412
1991	15940.449
1992	17748.28
1993	17407.249
1994	18969.391
1995	22816.074
1996	24029.851
1997	25063.945
1998	24048.186
1999	25236.294
2000	27869.2
2001	32456.617
2002	33707.064
2003	35672.576
2004	37704.094
2005	39478.922
2006	43541.958
2007	44381.701
2008	49511.834
2009	53736.218
2010	59937.115
2011	63413.431
2012	67505.803
2013	69709.67
2014	73189.653