Year	kt
1960	13846.619241143402
1961	14526.587150306696
1962	14650.217679245476
1963	15817.151421835224
1964	17249.822551351343
1965	20482.770767567556
1966	22158.70139459458
1967	23555.929589189178
1968	27063.86420540538
1969	31236.968627027014
1970	34414.17635675674
1971	36628.93168648646
1972	37602.53218378376
1973	40475.02525405402
1974	41340.86081081079
1975	42381.34989189186
1976	40894.9369189189
1977	44012.6881297297
1978	46457.83747027022
1979	48185.79255135132
1980	51597.11032432429
1981	50519.4609189189
1982	51589.67825945942
1983	52113.6388324324
1984	50326.227232432415
1985	53982.80314594592
1986	47000.37820540539
1987	53737.54500540537
1988	57747.143999999986
1989	61641.545989189166
1990	49731.66204324323
1991	49229.99766486485
1992	50032.66067027026
1993	50898.496227027026
1994	52247.41599999999
1995	57414.219000000005
1996	60476.164
1997	63072.39999999998
1998	61906.294
1999	60780.525
2000	60806.19400000003
2001	66427.70500000002
2002	69001.93899999998
2003	74451.10099999998
2004	80428.311
2005	81334.06
2006	86093.82600000002
2007	94414.24899999998
2008	97322.18000000002
2009	100065.09600000002
2010	109379.276
2011	115297.81400000001
2012	122719.822
2013	127197.22899999998
2014	137376.821
2015	145341.54499999995
2016	146613.994