Year	kt
1963	101.6501435177463
1964	159.7359398136013
1965	275.9075324053114
1966	474.3673364161493
1967	503.41023456407686
1968	435.6434722189126
1969	222.66221913411087
1970	417.49166087645796
1971	848.8997104487976
1972	1117.949891902515
1973	1925.100436263667
1974	2356.508485836007
1975	1414.8328507479962
1976	1674.6054397377925
1977	9179.839903548627
1978	6459.1924104171985
1979	3299.9067176587146
1980	3295.2193501620404
1981	12777.189560030021
1982	12885.152587172082
1983	5884.1883992402745
1984	5147.491765523589
1985	7015.041193671617
1986	8333.587397967085
1987	8873.205951326441
1988	9703.749289975187
1989	10401.557515943481
1990	9839.564313821367
1991	11937.672268410597
1992	12649.53032443194
1993	13946.797965997159
1994	13679.851194989154
1995	13567.452554564728
1996	14676.799513353977
1997	15981.094473269372
1998	16709.828667955193
1999	18390.094772899578
2000	20373.56799038584
2001	18629.013452907766
2002	19803.663288203792
2003	29309.252150913213
2004	31501.626535631345
2005	33148.023515660985
2006	33947.94389927435
2007	33389.269345639615
2008	33343.791143212424
2009	29937.060343211546
2010	33958.148100520324
2011	44380.741444747204
2012	44868.21491495852
2013	44926.050750407325
2014	50375.012675904996
2015	50589.83149328626
2016	49110.886558238366