Year	kt
1992	3479.983
1993	1507.137
1994	1617.147
1995	2618.238
1996	2042.519
1997	2680.577
1998	2794.254
1999	2277.207
2000	2566.9
2001	2614.571
2002	2005.849
2003	2229.536
2004	2475.225
2005	3065.612
2006	3142.619
2007	3762.342
2008	4125.375
2009	3171.955
2010	2955.602
2011	3758.675
2012	4569.082
2013	4422.402
2014	4459.072
2015	3773.343
2016	4191.381