Year	kt
1960	19042.53517959551
1961	21102.65583870031
1962	22561.037400622372
1963	23749.338206236378
1964	28592.5693392035
1965	29917.201247546487
1966	33119.6936847757
1967	36439.065408035196
1968	38531.20462797692
1969	44788.142406797015
1970	46891.96955534177
1971	59160.39861231843
1972	59359.09339856989
1973	63742.06662470478
1974	63968.03324436328
1975	67225.06934840663
1976	65764.07827302832
1977	65464.08810555064
1978	67057.54237176324
1979	66017.31672609391
1980	63091.43859913629
1981	66617.29706104925
1982	74681.96779713743
1983	79236.36397611671
1984	75535.18658515836
1985	75687.12965699768
1986	76388.40537317927
1987	73096.30548332687
1988	77642.90970990411
1989	85247.85525427327
1990	74378.08165345875
1991	74651.47464299563
1992	68162.48404479574
1993	57824.282635892145
1994	64575.379028595235
1995	77146.72446986241
1996	76183.68681083783
1997	86762.28509612333
1998	87088.23630379321
1999	75065.08152997079
2000	77461.56370454353
2001	71616.6659124635
2002	68790.52078232593
2003	89536.57435231343
2004	106408.25334022504
2005	80954.42721400583
2006	112586.51032196743
2007	122853.97336356812
2008	130569.3866087536
2009	148944.88594114216
2010	122216.88691221339
2011	140584.9782626094
2012	133288.11599999998
2013	139929.053
2014	163665.544
2015	161509.348
2016	164886.65499999997