Year	kt
1992	12596.145
1993	10916.659
1994	1177.107
1995	1378.792
1996	1998.515
1997	6248.568
1998	7964.724
1999	7763.039
2000	9717.55
2001	9464.527
2002	10461.951
2003	10821.317
2004	11100.009
2005	11859.078
2006	12907.84
2007	12698.821
2008	14587.326
2009	15331.727
2010	15885.444
2011	18500.015
2012	17249.568
2013	17099.221
2014	14561.657
2015	13501.894
2016	16164.136