Year	kt
1960	25769.155301410603
1961	28270.93743830314
1962	29885.506101728995
1963	31868.563048666143
1964	37915.97093222829
1965	41709.84662947349
1966	45948.05011108074
1967	50744.51157816851
1968	50885.02549288129
1969	58882.925611398176
1970	65703.5469850242
1971	79185.28745071031
1972	80461.30570323723
1973	86807.21790553626
1974	89552.93575249154
1975	94136.72751082478
1976	93354.40679647795
1977	93225.28590187698
1978	98443.28911310312
1979	103308.10870086198
1980	109984.41848640458
1981	117435.45363955284
1982	131969.14962889958
1983	135413.63937604814
1984	140092.37296864684
1985	140168.32643605908
1986	136689.657628575
1987	126135.92333163368
1988	139389.80339508285
1989	152476.585830225
1990	123872.51000274665
1991	125529.62979532451
1992	125080.71343045874
1993	115104.38198315189
1994	112748.49858075698
1995	125439.98697486275
1996	130063.78896388327
1997	144149.05499104303
1998	139285.58224501595
1999	128271.7891499567
2000	136129.30273735922
2001	138183.09676278534
2002	136453.78006992198
2003	155690.12375151692
2004	169602.08938514884
2005	153813.31736203408
2006	181073.1005397284
2007	191028.6550615429
2008	201906.02018722918
2009	215346.01879167877
2010	227746.21503496103
2011	258892.35171857852
2012	242469.37400000007
2013	255842.9230000001
2014	287855.83299999987
2015	276242.44399999996
2016	286755.73299999995