Year	kt
1960	25769.155301410654
1961	28270.937438303186
1962	29885.50610172905
1963	31868.56304866621
1964	37915.970932228345
1965	41709.84662947355
1966	45948.0501110808
1967	50744.51157816858
1968	50885.02549288136
1969	58882.925611398285
1970	65703.5469850243
1971	79185.28745071046
1972	80461.30570323736
1973	86807.2179055364
1974	89552.93575249161
1975	94136.72751082492
1976	93354.40679647807
1977	93225.28590187713
1978	98443.28911310327
1979	103308.10870086213
1980	109984.41848640476
1981	117435.45363955297
1982	131969.14962889973
1983	135413.63937604832
1984	140092.37296864693
1985	140168.32643605923
1986	136689.65762857517
1987	126135.9233316338
1988	139389.80339508297
1989	152476.5858302251
1990	123872.51000274673
1991	125529.62979532461
1992	125080.71343045881
1993	115104.38198315192
1994	112748.49858075705
1995	125439.98697486278
1996	130063.78896388327
1997	144149.05499104306
1998	139285.58224501595
1999	128271.7891499567
2000	136129.30273735916
2001	138183.0967627854
2002	136453.780069922
2003	155690.1237515169
2004	169602.08938514884
2005	153813.31736203408
2006	181073.10053972842
2007	191028.65506154293
2008	201906.02018722915
2009	215346.0187916787
2010	227746.215034961
2011	258892.35171857843
2012	242469.37400000007
2013	255842.92300000004
2014	287855.8329999999
2015	276242.44399999996
2016	286755.73299999995