Year	kt
1960	795687.2916982268
1961	849538.3399591066
1962	922280.4511393108
1963	988111.1978368356
1964	1072955.718192333
1965	1146719.315522722
1966	1246786.2111259627
1967	1319068.8595388934
1968	1453469.087545203
1969	1578337.7637688732
1970	1777270.3408534173
1971	1944473.5873814218
1972	2101384.238933094
1973	2294680.9826373113
1974	2444754.5866867183
1975	2582519.859733252
1976	2740393.128081273
1977	2895053.560027806
1978	3094043.7295702514
1979	3179708.396951213
1980	3228801.8535649464
1981	3232631.7520153737
1982	3288747.3747460544
1983	3305313.43388662
1984	3258893.912818297
1985	3338091.769926359
1986	3411847.13976276
1987	3324335.3999819704
1988	3407066.9657569663
1989	3483002.6214996264
1990	3367418.6722390205
1991	3457798.007896963
1992	3000784.771151732
1993	2980368.914927123
1994	2845256.078881235
1995	2928020.376820454
1996	2986366.6479821075
1997	3091803.7759720273
1998	3159803.856875957
1999	3228507.1710601207
2000	3330748.45356709
2001	3376171.4325108207
2002	3350472.1220603674
2003	3500732.0875035543
2004	3681065.400763264
2005	3698263.3204071135
2006	3793870.8660000004
2007	3821670.393
2008	4062867.318000002
2009	4120285.204
2010	4257915.048
2011	4395456.883999998
2012	4574868.526000001
2013	4686125.306000001
2014	4820139.488000002
2015	4886640.533000003
2016	4988784.818000002