Year	kt
1960	2800907.5893729003
1961	2794929.8160571503
1962	2854402.1505782795
1963	2991045.6023066896
1964	3054717.067210199
1965	3092804.9038946615
1966	3103433.0386200417
1967	3114879.7269355273
1968	3120313.2612296096
1969	3180710.360531067
1970	3171922.8655376527
1971	3007539.8434293987
1972	2969005.011873146
1973	3100861.676444177
1974	3086308.8337159734
1975	3043853.215630583
1976	3242189.1605442124
1977	3285100.591781326
1978	3365348.2425254276
1979	3552825.5523831546
1980	3700919.8680524835
1981	3718065.4325213586
1982	3678549.6244596406
1983	3784213.980413607
1984	3920386.0929231048
1985	4130073.6003032974
1986	4045137.616525575
1987	4220659.594566205
1988	4345039.465168868
1989	4408875.357328922
1990	4239498.924609347
1991	4237746.847984352
1992	4168906.1498068413
1993	4129985.410375693
1994	4128512.999047907
1995	4127225.5829895097
1996	4234632.972148158
1997	4283518.996996276
1998	4247790.818656939
1999	4229101.768379044
2000	4421251.634195787
2001	4419310.993419455
2002	4468381.224462932
2003	4523890.660440186
2004	4614588.36517859
2005	4589892.12001582
2006	4643796.46066539
2007	4698316.225250375
2008	4586603.5663486775
2009	4130136.4598001954
2010	4349896.348752749
2011	4264020.725256764
2012	4086608.807780758
2013	4108980.6642510067
2014	4025167.369364748
2015	4106686.7969107837
2016	3857800.9935210105