Year	kt
1992	788.405
1993	267.691
1994	322.696
1995	282.359
1996	473.043
1997	282.359
1998	322.696
1999	330.03
2000	458.375
2001	300.694
2002	282.359
2003	370.367
2004	583.053
2005	693.063
2006	729.733
2007	770.07
2008	762.736
2009	436.373
2010	458.375
2011	520.714
2012	480.377
2013	374.034
2014	348.365
2015	407.037
2016	421.705