Year	kt
1960	3677.587710376634
1961	3833.2292700660923
1962	4245.739221971682
1963	4502.585041082711
1964	5308.146928294569
1965	5460.789543055017
1966	5960.694106395482
1967	5903.453125860315
1968	6250.715074440332
1969	13745.467459178313
1970	23400.112842776623
1971	21602.74605397235
1972	23625.260699548293
1973	26273.610065642057
1974	30043.88265022511
1975	31833.61730829136
1976	35149.778113962086
1977	30153.29326126558
1978	52507.26995621695
1979	46193.900366386646
1980	49645.869496372325
1981	33422.37660953016
1982	28217.752071383995
1983	44163.10616519199
1984	72418.9594411012
1985	75265.11941913575
1986	84718.02826184484
1987	97649.57707770729
1988	108237.9018152682
1989	115286.62465243539
1990	115054.2073048315
1991	126168.00267667627
1992	125487.41103399404
1993	140776.00877268298
1994	159920.02509058866
1995	186048.66066887032
1996	192383.1057901476
1997	191261.4603455036
1998	219553.54086616627
1999	236051.23437230193
2000	242244.99853950518
2001	253320.7720318705
2002	285586.1389581362
2003	304779.5837193652
2004	326862.6913210329
2005	389693.8471608327
2006	407769.44866536575
2007	434962.69686907204
2008	453353.87997328455
2009	474060.5955377958
2010	496179.47624034696
2011	516367.96768579434
2012	521253.6282049599
2013	523928.20441451855
2014	560061.5770410992
2015	594310.5891563997
2016	629653.7460847017