Year	kt
1990	2807.4
1991	2734.7
1992	3298.3
1993	3249.7
1994	3080.1
1995	3189.8
1996	2915.9
1997	3066
1998	3682.2
1999	3858.5
2000	4033.8
2001	3865.6
2002	4026.7
2003	3915
2004	3970.3
2005	4278.6
2006	4086.9
2007	4319.8
2008	4392.7
2009	4186.58
2010	3371.7
2011	3883.337
2012	3414.335
2013	5421.539
2014	6988.912
2015	6949.712
2016	6629.312
2017	7337.512
2018	8061.3875
2019	7198.3
2020	5763.687