Year	kt
1960	3717.6204956067063
1961	3874.9563086009443
1962	4291.956682927543
1963	4551.598425432783
1964	5365.929345108311
1965	5520.233567828895
1966	6025.5798972388075
1967	5967.71581371859
1968	6318.7579204079175
1969	13895.095255988595
1970	23654.837343065534
1971	21837.905120530657
1972	23882.436071578402
1973	26559.61433578053
1974	30370.92863697895
1975	32180.1456483778
1976	35532.40488698249
1977	30481.53024925137
1978	53078.84361447222
1979	46696.7491460606
1980	50186.295065421466
1981	33786.19956361297
1982	28524.91951300931
1983	44643.848511381424
1984	73207.28398376558
1985	76084.4261490664
1986	85640.23566996517
1987	98712.55228178714
1988	109416.13739205622
1989	116541.58987640231
1990	116306.64252421576
1991	127541.41833711343
1992	126853.41803929998
1993	142308.44148906443
1994	161660.85210074403
1995	188073.91381344764
1996	194477.3132333202
1997	193343.45799390695
1998	221943.51506669904
1999	238620.79602878017
2000	244881.98309659073
2001	256078.3231386608
2002	288694.91826293356
2003	308097.2953766891
2004	330420.7910733396
2005	393935.9023658931
2006	412208.2678173182
2007	439697.53111319355
2008	458288.9134624875
2009	479221.03425518
2010	501580.69246473577
2011	521988.94795275765
2012	526927.7918664942
2013	529631.4824693485
2014	566158.1888951247
2015	600780.022396163
2016	636507.9111438233