Year	kt
1990	330.03
1991	333.697
1992	341.031
1993	348.365
1994	348.365
1995	355.699
1996	359.366
1997	366.7
1998	370.367
1999	374.034
2000	381.368
2001	385.035
2002	388.702
2003	388.702
2004	410.704
2005	414.371
2006	410.704
2007	421.705
2008	443.707
2009	506.046
2010	524.381
2011	550.05
2012	594.054
2013	594.054
2014	575.719
2015	638.058
2016	803.073