Year	kt
1992	1826.166
1993	1631.815
1994	1353.123
1995	1078.098
1996	986.423
1997	788.405
1998	671.061
1999	564.718
2000	377.701
2001	341.031
2002	557.384
2003	715.065
2004	696.73
2005	766.403
2006	1045.095
2007	982.756
2008	832.409
2009	652.726
2010	803.073
2011	916.75
2012	898.415
2013	1026.76
2014	869.079
2015	693.063
2016	704.064