Year	kt
1960	40.337
1961	44.004
1962	47.671
1963	66.006
1964	84.341
1965	121.011
1966	139.346
1967	88.008
1968	121.011
1969	84.341
1970	139.346
1971	161.348
1972	190.684
1973	179.683
1974	194.351
1975	198.018
1976	198.018
1977	198.018
1978	201.685
1979	363.033
1980	348.365
1981	300.694
1982	348.365
1983	348.365
1984	352.032
1985	359.366
1986	377.701
1987	388.702
1988	348.365
1989	388.702
1990	322.696
1991	337.364
1992	337.364
1993	337.364
1994	330.03
1995	330.03
1996	333.697
1997	348.365
1998	341.031
1999	341.031
2000	366.7
2001	366.7
2002	399.703
2003	421.705
2004	407.037
2005	414.371
2006	410.704
2007	462.042
2008	498.712
2009	458.375
2010	517.047
2011	473.043
2012	480.377
2013	498.712
2014	528.048
2015	539.049
2016	531.715