Year	kt
1992	7924.387
1993	7374.337
1994	7480.68
1995	6013.88
1996	6032.215
1997	5053.126
1998	4895.445
1999	4033.7
2000	3351.638
2001	3608.328
2002	3446.98
2003	3810.013
2004	3953.026
2005	3949.359
2006	4330.727
2007	4646.089
2008	4290.39
2009	3916.356
2010	4000.697
2011	3549.656
2012	3487.317
2013	3520.32
2014	3674.334
2015	3766.009
2016	3762.342