Year	kt
1960	14.668
1961	18.335
1962	18.335
1963	22.002
1964	22.002
1965	25.669
1966	29.336
1967	33.003
1968	36.67
1969	62.339
1970	66.006
1971	69.673
1972	77.007
1973	80.674
1974	73.34
1975	77.007
1976	84.341
1977	69.673
1978	99.009
1979	150.347
1980	113.677
1981	95.342
1982	113.677
1983	102.676
1984	113.677
1985	128.345
1986	132.012
1987	146.68
1988	165.015
1989	165.015
1990	161.348
1991	168.682
1992	150.347
1993	231.021
1994	256.69
1995	308.028
1996	322.696
1997	304.361
1998	293.36
1999	333.697
2000	348.365
2001	348.365
2002	289.693
2003	359.366
2004	355.699
2005	366.7
2006	366.7
2007	385.035
2008	396.036
2009	385.035
2010	403.37
2011	407.037
2012	407.037
2013	407.037
2014	407.037
2015	410.704
2016	414.371