Year	metric tons
1960	11619237.01
1961	13865273
1962	16255692
1963	16794224
1964	20301594
1965	18637659
1966	21293561.009999998
1967	23011673
1968	24874461
1969	23380879
1970	26690119
1971	25587302
1972	19957093
1973	18608556
1974	21166272
1975	20304940
1976	21746207
1977	20933672.990000002
1978	22924713.91
1979	23867707.81
1980	23425308.1
1981	24686889.08
1982	26369487.64
1983	25499899.39
1984	28514353.969999995
1985	30680325.22
1986	34197439.720000006
1987	33887531.839999996
1988	36809224.849999994
1989	38630251.51
1990	37472928.87
1991	39497083.23
1992	48797926.410000004
1993	50531953.45
1994	57036212.24
1995	57292420.49
1996	59249971.82
1997	57504172.160000004
1998	51411456.51
1999	57247570.599999994
2000	59142438.169999994
2001	55943241.81
2002	56885566.190000005
2003	54065104.410000004
2004	58746133.63
2005	58429062.14999999
2006	56393577.95999999
2007	56703167.36
2008	56719399.82
2009	56554683.14
2010	54055590.809999995
2011	58473353.41000001
2012	55908092.2
2013	56616530.660000004
2014	56256955.58000001
2015	57592527.39
2016	56530321.64
2017	58128385.43
2018	60792642.39999999
2019	57958189.38999999
2020	56660616.21000001
2021	58483926.54
2022	56865216.52999999