Year	kt
1990	436.011
1991	441.298
1992	477.186
1993	516.773
1994	566.421
1995	611.996
1996	667.281
1997	744.99
1998	956
1999	999
2000	1093.8
2001	1196.9
2002	1243.5
2003	1279.3
2004	1451.2
2005	1500.8
2006	1581.7
2007	1837.4
2008	2016.6
2009	1943.9
2010	2154
2011	2346.7
2012	2510.7
2013	2813.6
2014	3174.4
2015	3343.8
2016	3408.6
2017	3629.8
2018	3867.9
2019	3937.4
2020	4150.7