Year	kt
1960	27832.53
1961	29137.982
1962	31910.234
1963	35687.244
1964	39977.634
1965	47946.025
1966	47032.942
1967	51884.383
1968	56006.091
1969	61579.931
1970	68261.205
1971	72012.546
1972	71374.488
1973	82104.13
1974	76772.312
1975	77993.423
1976	73512.349
1977	77960.42
1978	81546.746
1979	79753.583
1980	82291.147
1981	85745.461
1982	85133.072
1983	76951.995
1984	81473.406
1985	71968.542
1986	74007.394
1987	76412.946
1988	77271.024
1989	81502.742
1990	82800.86
1991	78572.809
1992	80751.007
1993	87600.963
1994	87692.638
1995	86728.217
1996	93849.531
1997	89434.463
1998	87193.926
1999	89148.437
2000	90985.604
2001	80600.66
2002	89944.176
2003	95532.684
2004	95129.314
2005	99416.037
2006	98150.922
2007	99038.336
2008	107076.4
2009	107461.435
2010	114806.436
2011	119415.855
2012	122514.47
2013	123412.885
2014	120196.926
2015	117178.985
2016	118909.809