Year	kt
1960	972030.025
1961	957483.036
1962	953082.636
1963	990090
1964	1021365.843
1965	1057489.46
1966	1094214.465
1967	1103466.306
1968	1092692.66
1969	1108618.441
1970	1181819.095
1971	1206578.679
1972	1243648.382
1973	1257021.931
1974	1260358.901
1975	1298910.072
1976	1334560.646
1977	1356797.334
1978	1349569.677
1979	1352217.251
1980	1425095.209
1981	1293772.605
1982	1312199.28
1983	1304142.881
1984	1297853.976
1985	1478882.765
1986	1520825.911
1987	1525020.959
1988	1543014.928
1989	1466774.331
1990	1235885.343
1991	1102754.908
1992	616584.048
1993	550717.394
1994	517087.337
1995	498000.602
1996	503999.814
1997	453560.229
1998	427652.874
1999	459244.079
2000	464322.874
2001	446673.603
2002	448158.738
2003	449801.554
2004	438092.823
2005	433637.418
2006	449379.849
2007	428719.971
2008	453912.261
2009	368599.506
2010	394580.201
2011	400502.406
2012	456845.861
2013	421646.328
2014	404847.801
2015	453090.853
2016	441708.485