Year	kt
1990	712.98
1991	721.15
1992	758.35
1993	745.09
1994	743.33
1995	751.67
1996	808.6
1997	785.91
1998	766.25
1999	786.32
2000	836.58
2001	1040.4
2002	877
2003	1036.5
2004	1319.6
2005	1071.1
2006	1200
2007	1128.8
2008	863.4
2009	766.7
2010	1126.3
2011	1055.8
2012	993.5
2013	1066.9
2014	1213.6
2015	1263.8
2016	1198.6
2017	1331.1
2018	1387.2
2019	1393.5
2020	1028.2