Year	kt
1992	1642.816
1993	814.074
1994	1169.773
1995	1334.788
1996	1470.467
1997	1430.13
1998	1356.79
1999	1320.12
2000	1514.471
2001	1628.148
2002	1364.124
2003	1558.475
2004	1774.828
2005	1829.833
2006	1851.835
2007	1840.834
2008	1763.827
2009	1202.776
2010	1287.117
2011	1151.438
2012	1250.447
2013	1272.449
2014	997.424
2015	894.748
2016	979.089