Year	kt
1960	791333.2450311714
1961	845421.3890974077
1962	919909.3019413069
1963	986874.0796005994
1964	1073839.3256804817
1965	1143275.8587030189
1966	1249039.6193410666
1967	1320593.752784671
1968	1449480.8795892263
1969	1567514.2661963939
1970	1760253.2739326362
1971	1932667.0630876038
1972	2070962.3558826467
1973	2262546.2002653885
1974	2399915.5660693105
1975	2538717.4198191375
1976	2687936.9902538285
1977	2833286.767165086
1978	3023529.470659342
1979	3106900.2691110712
1980	3162530.6270799055
1981	3185230.370848798
1982	3258345.3860356337
1983	3284923.227605906
1984	3261156.3841207875
1985	3330243.824503191
1986	3394581.2178997495
1987	3292862.117323507
1988	3392608.951887272
1989	3475307.103825268
1990	3341695.4237924903
1991	3450019.685922554
1992	2980191.654987665
1993	2962819.2126071416
1994	2826867.6946903444
1995	2911538.090813402
1996	2989540.9464977942
1997	3086868.6182823195
1998	3134631.7836567624
1999	3194735.424428735
2000	3316902.447140291
2001	3348479.329261972
2002	3298133.8733640453
2003	3433857.6978142406
2004	3656244.237833012
2005	3669932.2835274413
2006	3755462.4186705467
2007	3786773.316078032
2008	4015227.3084803657
2009	4070390.4152423544
2010	4250445.171947837
2011	4410426.615722709
2012	4576553.998933406
2013	4719263.739401162
2014	4875442.474825827
2015	4952204.378292477
2016	5075724.559650649