Year	kt
1960	0
1961	0
1962	0
1963	0
1964	0
1965	0
1966	0
1967	0
1968	0
1969	0
1970	84.341
1971	84.341
1972	110.01
1973	124.678
1974	132.012
1975	124.678
1976	110.01
1977	135.679
1978	135.679
1979	135.679
1980	146.68
1981	172.349
1982	172.349
1983	198.018
1984	220.02
1985	220.02
1986	245.689
1987	297.027
1988	300.694
1989	319.029
1990	1012.092
1991	1085.432
1992	1067.097
1993	1048.762
1994	971.755
1995	1048.762
1996	1048.762
1997	1067.097
1998	1085.432
1999	1048.762
2000	1085.432
2001	990.09
2002	1158.772
2003	1217.444
2004	1441.131
2005	1250.447
2006	1305.452
2007	1595.145
2008	1272.449
2009	1290.784
2010	1371.458
2011	1404.461
2012	1422.796
2013	766.403
2014	579.386
2015	1441.131
2016	1496.136