Year	kt
1990	11523.73
1991	10830.76
1992	11823.48
1993	12568.4
1994	13543.45
1995	16554.48
1996	16825.3
1997	18970.9
1998	19249.5
1999	20105.5
2000	20686.7
2001	25634.5
2002	27284.2
2003	28629.8
2004	30527.5
2005	32710.8
2006	35902.8
2007	37992.3
2008	41580.8
2009	44750
2010	50487.6
2011	54309.9
2012	58985.2
2013	62965.7
2014	66313.1
2015	73156.9
2016	81128.9
2017	87658
2018	95944.6
2019	92645
2020	85493.1