Year	kt
1992	2068.188
1993	1888.505
1994	1415.462
1995	1012.092
1996	949.753
1997	843.41
1998	619.723
1999	480.377
2000	498.712
2001	469.376
2002	377.701
2003	330.03
2004	256.69
2005	311.695
2006	322.696
2007	407.037
2008	403.37
2009	326.363
2010	410.704
2011	418.038
2012	348.365
2013	300.694
2014	227.354
2015	176.016
2016	154.014