Year	kt
1960	5691.184
1961	7931.721
1962	9325.181
1963	9592.872
1964	10047.58
1965	10080.583
1966	10601.297
1967	12071.764
1968	14312.301
1969	16604.176
1970	18881.383
1971	22321.029
1972	26457.405
1973	31129.163
1974	32375.943
1975	36079.613
1976	38774.858
1977	40399.339
1978	43945.328
1979	48507.076
1980	49137.8
1981	50131.557
1982	48338.394
1983	53149.498
1984	53673.879
1985	55870.412
1986	55723.732
1987	52650.786
1988	52412.431
1989	54040.579
1990	59621.753
1991	65316.604
1992	65180.925
1993	66666.06
1994	63637.118
1995	67740.491
1996	74861.805
1997	71774.191
1998	76526.623
1999	78026.426
2000	81917.113
2001	85998.484
2002	85851.804
2003	90050.519
2004	91953.692
2005	93963.208
2006	90747.249
2007	88147.346
2008	91348.637
2009	88088.674
2010	97428.523
2011	84839.712
2012	87534.957
2013	89339.121
2014	74652.786