Year	kt
1960	36.67
1961	58.672
1962	47.671
1963	66.006
1964	66.006
1965	84.341
1966	121.011
1967	139.346
1968	154.014
1969	161.348
1970	194.351
1971	227.354
1972	216.353
1973	209.019
1974	216.353
1975	212.686
1976	264.024
1977	275.025
1978	311.695
1979	282.359
1980	293.36
1981	330.03
1982	337.364
1983	421.705
1984	458.375
1985	586.72
1986	605.055
1987	608.722
1988	572.052
1989	542.716
1990	436.373
1991	432.706
1992	414.371
1993	425.372
1994	440.04
1995	429.039
1996	432.706
1997	451.041
1998	447.374
1999	495.045
2000	568.385
2001	678.395
2002	682.062
2003	737.067
2004	726.066
2005	781.071
2006	781.071
2007	766.403
2008	792.072
2009	795.739
2010	803.073
2011	773.737
2012	751.735
2013	759.069
2014	737.067
2015	766.403
2016	770.07