Year	kt
1960	18.335
1961	22.002
1962	25.669
1963	29.336
1964	29.336
1965	29.336
1966	33.003
1967	33.003
1968	36.67
1969	47.671
1970	47.671
1971	55.005
1972	66.006
1973	62.339
1974	62.339
1975	99.009
1976	99.009
1977	113.677
1978	139.346
1979	146.68
1980	157.681
1981	157.681
1982	161.348
1983	161.348
1984	172.349
1985	172.349
1986	161.348
1987	179.683
1988	183.35
1989	179.683
1990	198.018
1991	198.018
1992	198.018
1993	209.019
1994	209.019
1995	216.353
1996	220.02
1997	223.687
1998	242.022
1999	275.025
2000	275.025
2001	300.694
2002	297.027
2003	297.027
2004	319.029
2005	322.696
2006	348.365
2007	348.365
2008	363.033
2009	374.034
2010	425.372
2011	443.707
2012	447.374
2013	425.372
2014	506.046
2015	517.047
2016	524.381