Year	kt
1990	861.745
1991	883.747
1992	916.75
1993	935.085
1994	968.088
1995	946.086
1996	1037.761
1997	865.412
1998	1463.133
1999	1367.791
2000	1661.151
2001	1349.456
2002	1155.105
2003	1279.783
2004	2196.533
2005	2742.916
2006	2266.206
2007	2324.878
2008	2053.52
2009	2090.19
2010	2035.185
2011	2247.871
2012	2200.2
2013	2438.555
2014	2838.258
2015	3006.94
2016	3234.294