Year	kt
1962	44.004
1963	47.671
1964	47.671
1965	36.67
1966	47.671
1967	47.671
1968	55.005
1969	73.34
1970	62.339
1971	73.34
1972	69.673
1973	69.673
1974	88.008
1975	77.007
1976	84.341
1977	99.009
1978	102.676
1979	106.343
1980	143.013
1981	150.347
1982	143.013
1983	187.017
1984	198.018
1985	216.353
1986	216.353
1987	223.687
1988	212.686
1989	249.356
1990	194.351
1991	223.687
1992	198.018
1993	212.686
1994	216.353
1995	220.02
1996	227.354
1997	234.688
1998	234.688
1999	249.356
2000	267.691
2001	198.018
2002	201.685
2003	154.014
2004	190.684
2005	146.68
2006	172.349
2007	179.683
2008	179.683
2009	176.016
2010	293.36
2011	396.036
2012	326.363
2013	337.364
2014	330.03
2015	348.365
2016	429.039