Year	kt
1992	33941.752
1993	32284.268
1994	27880.201
1995	26318.059
1996	27737.188
1997	31558.202
1998	30953.147
1999	31994.575
2000	32658.302
2001	33102.009
2002	33703.397
2003	35078.522
2004	38045.125
2005	38804.194
2006	39511.925
2007	39742.946
2008	40524.017
2009	33652.059
2010	41569.112
2011	39357.911
2012	38701.518
2013	39071.885
2014	38738.188
2015	36266.63
2016	36042.943