Year	kt
1990	2612523.044097
1991	2739316.1120720017
1992	2812697.3970749998
1993	2911432.9416110003
1994	3047080.402242
1995	3182800.8721290003
1996	3339765.4148869994
1997	3502837.9550900003
1998	3610180.567404
1999	3727213.88017
2000	3867900.4200000004
2001	3962589.65
2002	4084583.54
2003	4252138.45
2004	4480288.94
2005	4670965.26
2006	4924956.369999999
2007	5220062.370000001
2008	5419740.08
2009	5581244.390000001
2010	5857230.62
2011	6085825.117
2012	6383658.6049999995
2013	6455704.658999999
2014	6781898.692
2015	6839149.541999999
2016	6951805.908000001
2017	7211474.182
2018	7382656.357499999
2019	7347348.7299999995
2020	6805648.307