Year	kt
1990	47.671
1991	51.338
1992	77.007
1993	84.341
1994	84.341
1995	88.008
1996	88.008
1997	88.008
1998	91.675
1999	88.008
2000	99.009
2001	102.676
2002	110.01
2003	106.343
2004	117.344
2005	113.677
2006	121.011
2007	124.678
2008	128.345
2009	132.012
2010	135.679
2011	139.346
2012	135.679
2013	139.346
2014	143.013
2015	143.013
2016	143.013