Year	kt
1992	7000.303
1993	5221.808
1994	5027.457
1995	5863.533
1996	6706.943
1997	3468.982
1998	3120.617
1999	2607.237
2000	1752.826
2001	1921.508
2002	1925.175
2003	2057.187
2004	2104.858
2005	2365.215
2006	2361.548
2007	2178.198
2008	2042.519
2009	1877.504
2010	1983.847
2011	1917.841
2012	1826.166
2013	1723.49
2014	1752.826
2015	1683.153
2016	1727.157