Year	kt
1992	7880.383
1993	6838.955
1994	5929.539
1995	5309.816
1996	5056.793
1997	4176.713
1998	4063.036
1999	3248.962
2000	3512.986
2001	2959.269
2002	2640.24
2003	2599.903
2004	2302.876
2005	2273.54
2006	2299.209
2007	2207.534
2008	2035.185
2009	2071.855
2010	2273.54
2011	2317.544
2012	2944.601
2013	3146.286
2014	3256.296
2015	2929.933
2016	3157.287