Year	kt
1960	41224.414
1961	42155.832
1962	45115.101
1963	40678.031
1964	45247.113
1965	47362.972
1966	48609.752
1967	49812.528
1968	52603.115
1969	60622.844
1970	63978.149
1971	69375.973
1972	69353.971
1973	71268.145
1974	71510.167
1975	68968.936
1976	71924.538
1977	72764.281
1978	72958.632
1979	79137.527
1980	76570.627
1981	70116.707
1982	69086.28
1983	68730.581
1984	67289.45
1985	60487.165
1986	62250.992
1987	66508.379
1988	66284.692
1989	59801.436
1990	59236.718
1991	61282.904
1992	63684.789
1993	67205.109
1994	67260.114
1995	62885.383
1996	65976.664
1997	66922.75
1998	69632.663
1999	72071.218
2000	66875.079
2001	63714.125
2002	57542.564
2003	59405.4
2004	67868.836
2005	71858.532
2006	81979.452
2007	78015.425
2008	88730.399
2009	82448.828
2010	90219.201
2011	86977.573
2012	85657.453
2013	90835.257
2014	87586.295
2015	91623.662
2016	88792.738