Year	kt
1960	106.343
1961	132.012
1962	84.341
1963	84.341
1964	36.67
1965	47.671
1966	44.004
1967	40.337
1968	51.338
1969	55.005
1970	58.672
1971	62.339
1972	66.006
1973	66.006
1974	69.673
1975	176.016
1976	267.691
1977	267.691
1978	289.693
1979	293.36
1980	495.045
1981	597.721
1982	608.722
1983	693.063
1984	630.724
1985	612.389
1986	594.054
1987	579.386
1988	667.394
1989	652.726
1990	498.712
1991	443.707
1992	451.041
1993	454.708
1994	454.708
1995	447.374
1996	443.707
1997	454.708
1998	458.375
1999	476.71
2000	487.711
2001	484.044
2002	480.377
2003	469.376
2004	476.71
2005	476.71
2006	476.71
2007	502.379
2008	491.378
2009	524.381
2010	539.049
2011	612.389
2012	685.729
2013	744.401
2014	770.07
2015	850.744
2016	861.745