Year	kt
1963	7.334
1964	7.334
1965	7.334
1966	7.334
1967	7.334
1968	7.334
1969	7.334
1970	29.336
1971	33.003
1972	44.004
1973	47.671
1974	55.005
1975	58.672
1976	80.674
1977	84.341
1978	77.007
1979	121.011
1980	95.342
1981	99.009
1982	84.341
1983	99.009
1984	99.009
1985	150.347
1986	165.015
1987	201.685
1988	198.018
1989	234.688
1990	150.347
1991	172.349
1992	172.349
1993	183.35
1994	201.685
1995	198.018
1996	234.688
1997	341.031
1998	432.706
1999	509.713
2000	572.052
2001	634.391
2002	539.049
2003	550.05
2004	737.067
2005	689.396
2006	733.4
2007	641.725
2008	693.063
2009	524.381
2010	443.707
2011	326.363
2012	421.705
2013	330.03
2014	487.711
2015	491.378
2016	605.055