Year	kt
1990	536.36
1991	481.45
1992	483.55
1993	486.05
1994	461.723
1995	454.989
1996	464.63
1997	481.23
1998	480.02
1999	494.89
2000	660.52
2001	674.05
2002	795.79
2003	684.91
2004	662.34
2005	716.9
2006	720.3
2007	653.34
2008	653.34
2009	670.88
2010	703.68
2011	736.07
2012	814.13
2013	903.69
2014	923.92
2015	1080.44
2016	1148
2017	1255.5
2018	1403.4
2019	1451.1
2020	1382