Year	kt
1960	113.677
1961	99.009
1962	117.344
1963	113.677
1964	91.675
1965	146.68
1966	128.345
1967	132.012
1968	110.01
1969	84.341
1970	220.02
1971	216.353
1972	106.343
1973	187.017
1974	176.016
1975	121.011
1976	168.682
1977	168.682
1978	139.346
1979	44.004
1980	47.671
1981	238.355
1982	88.008
1983	245.689
1984	315.362
1985	231.021
1986	227.354
1987	245.689
1988	300.694
1989	352.032
1990	403.37
1991	352.032
1992	421.705
1993	352.032
1994	293.36
1995	370.367
1996	352.032
1997	245.689
1998	198.018
1999	194.351
2000	176.016
2001	176.016
2002	264.024
2003	245.689
2004	286.026
2005	333.697
2006	443.707
2007	399.703
2008	410.704
2009	366.7
2010	627.057
2011	1015.759
2012	909.416
2013	1004.758
2014	1246.78
2015	1323.787
2016	1305.452