Year	kt
1960	0
1961	0
1962	0
1963	0
1964	0
1965	0
1966	0
1967	0
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	51.338
1981	80.674
1982	121.011
1983	344.698
1984	399.703
1985	399.703
1986	330.03
1987	436.373
1988	410.704
1989	454.708
1990	223.687
1991	227.354
1992	194.351
1993	227.354
1994	227.354
1995	249.356
1996	264.024
1997	234.688
1998	264.024
1999	242.022
2000	227.354
2001	234.688
2002	264.024
2003	275.025
2004	352.032
2005	256.69
2006	264.024
2007	231.021
2008	271.358
2009	278.692
2010	330.03
2011	370.367
2012	385.035
2013	341.031
2014	399.703
2015	333.697
2016	359.366