Year	kt
1990	388.9
1991	397.3
1992	408.5
1993	409.9
1994	425
1995	436.6
1996	449.1
1997	464.7
1998	474.4
1999	490.2
2000	507.4
2001	521.7
2002	532.4
2003	764.9
2004	773.1
2005	796.6
2006	815.2
2007	876.5
2008	1027.7
2009	1114.2
2010	1190
2011	1003.6649
2012	1233.73
2013	1487.26
2014	1483.1
2015	1478.55
2016	1469.87
2017	1488.2
2018	1557.4
2019	1583.6
2020	1568.4