Year	kt
1990	187.6
1991	229.6
1992	201.2
1993	210.6
1994	210.6
1995	216.9
1996	223.3
1997	226.2
1998	232.5
1999	233.8
2000	262.6
2001	210.2
2002	218.1
2003	171.2
2004	159.6
2005	161
2006	191.6
2007	192.1
2008	198.7
2009	198.1
2010	323.3
2011	359.3
2012	364.2
2013	366.4
2014	364.8
2015	366.8
2016	442
2017	529.1
2018	664.9
2019	707.4
2020	713.466