Year	kt
1976	52967.24579145347
1977	67134.83981501192
1978	67775.47929877721
1979	74598.98142665903
1980	78219.61520880043
1981	88713.42453130217
1982	87954.41642502963
1983	85106.62064306028
1984	96198.40225840798
1985	100863.49559317445
1986	115548.09535887957
1987	115562.02101062515
1988	124516.21508302762
1989	124739.02551095675
1990	129348.4162387409
1991	134322.82090234268
1992	91991.74881389883
1993	110179.52703258154
1994	124702.63739154954
1995	131869.29981511
1996	139767.9920700808
1997	146270.4052021763
1998	166830.50231894807
1999	162998.64246070132
2000	136496.4513420494
2001	148306.64127968007
2002	144244.74829235533
2003	149769.2850198204
2004	156039.286523688
2005	167194.0040006047
2006	178701.8334755733
2007	178018.348752807
2008	179000.43196032074
2009	175657.74507970063
2010	188606.22772906485
2011	179202.42491242444
2012	178582.20735573405
2013	179000.18005698186
2014	181229.36779697044
2015	191754.82791799968
2016	185098.73406934837