Year	kt
1960	800955.1608862263
1961	855703.7320015976
1962	930334.8724241453
1963	998290.7489532712
1964	1086601.0205956951
1965	1156516.3122406383
1966	1264783.7388071136
1967	1337416.2785899262
1968	1471725.3805264917
1969	1594233.5069374677
1970	1786424.9647864942
1971	1962035.002805995
1972	2099027.608854413
1973	2291711.1285883454
1974	2431984.3001733157
1975	2571528.4571946035
1976	2720939.163594768
1977	2868577.039124163
1978	3061683.0559347714
1979	3157357.933161101
1980	3212203.852693259
1981	3240208.781471822
1982	3309419.601610998
1983	3341545.9479512624
1984	3322061.376885688
1985	3389056.1584364134
1986	3457943.8925757785
1987	3363047.735451558
1988	3464666.566648786
1989	3543627.956577157
1990	3405347.1486576917
1991	3521109.716577613
1992	3049245.22104921
1993	3030325.2887715204
1994	2892855.434125118
1995	2980586.940943191
1996	3060632.914281402
1997	3158411.616593045
1998	3209627.6285314807
1999	3271660.863047519
2000	3394485.7094608443
2001	3429048.504079538
2002	3368485.321269379
2003	3523743.310484185
2004	3747290.9415784827
2005	3762985.475156744
2006	3854660.036938622
2007	3902826.269961256
2008	4137778.850181663
2009	4191222.6492293538
2010	4366369.386410428
2011	4525050.151462123
2012	4679369.579721251
2013	4825893.012127505
2014	4982863.806921465
2015	5051855.269175672
2016	5177645.326032588