Year	kt
1960	121.011
1961	117.344
1962	139.346
1963	176.016
1964	176.016
1965	198.018
1966	190.684
1967	223.687
1968	198.018
1969	161.348
1970	201.685
1971	227.354
1972	245.689
1973	245.689
1974	282.359
1975	315.362
1976	315.362
1977	396.036
1978	377.701
1979	414.371
1980	381.368
1981	385.035
1982	352.032
1983	407.037
1984	425.372
1985	396.036
1986	370.367
1987	348.365
1988	374.034
1989	407.037
1990	414.371
1991	425.372
1992	440.04
1993	451.041
1994	462.042
1995	465.709
1996	487.711
1997	517.047
1998	770.07
1999	803.073
2000	832.409
2001	839.743
2002	858.078
2003	858.078
2004	891.081
2005	916.75
2006	1081.765
2007	1298.118
2008	1558.475
2009	1785.829
2010	1976.513
2011	2159.863
2012	2299.209
2013	2478.892
2014	2651.241
2015	2852.926
2016	2863.927