Year	kt
1992	3718.338
1993	3905.355
1994	3578.992
1995	2519.229
1996	2647.574
1997	2544.898
1998	2834.591
1999	2706.246
2000	1767.494
2001	2251.538
2002	2093.857
2003	2130.527
2004	2024.184
2005	1965.512
2006	1910.507
2007	1888.505
2008	1763.827
2009	1331.121
2010	1386.126
2011	1283.45
2012	1235.779
2013	1026.76
2014	817.741
2015	491.378
2016	1004.758