Year	kt
1960	1010110.5140938635
1961	809857.2585510758
1962	701523.6509152618
1963	703954.7646438209
1964	714412.2371822743
1965	764424.5561196777
1966	813081.4078771605
1967	745742.6823790303
1968	797574.5686720886
1969	913420.1991934194
1970	1095139.9292050628
1971	1175603.4439938406
1972	1187611.2745368213
1973	1230224.8680952743
1974	1249176.111837883
1975	1376215.715355286
1976	1381751.82797015
1977	1482849.4214100502
1978	1573110.5256197911
1979	1637061.4319911774
1980	1667290.9613420565
1981	1700783.7466012128
1982	1833822.997758747
1983	1917192.1500248571
1984	2116616.584150144
1985	2303970.976193881
1986	2381188.9295133087
1987	2529355.757896599
1988	2725103.942177713
1989	2773190.133390078
1990	2740669.797716852
1991	2843549.5684370794
1992	2889300.512983138
1993	3026453.896053504
1994	3200341.3721886673
1995	3409909.5020407354
1996	3536776.783824702
1997	3531410.0727496142
1998	3357962.538216467
1999	3346389.288597836
2000	3449123.058525665
2001	3540309.362650054
2002	3939991.6487315428
2003	4524422.33746156
2004	5135872.274482214
2005	5729807.591407004
2006	6276388.974377557
2007	6404100.206336281
2008	7246588.425353329
2009	7076138.573631768
2010	8094420.716933491
2011	8906023.83695883
2012	9078056.839081826
2013	9028990.32326381
2014	8914374.095299752
2015	8884623.307201102
2016	8629124.555627141