Year	kt
1991	3605828.3814988113
1992	2826804.314411219
1993	2596485.181020142
1994	2441522.582503296
1995	2371363.4767353986
1996	2337265.9857738675
1997	2176836.1996199535
1998	2103463.7571403864
1999	2045138.205070048
2000	2092559.6383697083
2001	2070167.7515517857
2002	2063692.1277551726
2003	2129124.1025901
2004	2108214.4800486597
2005	2075331.7751018112
2006	2172308.419679667
2007	2160456.7140692663
2008	2103346.2471706173
2009	1846495.0387505635
2010	1959219.5801233652
2011	2011230.058095895
2012	2110435.4316043234
2013	2030823.0917628042
2014	1913408.202217068
2015	2327474.324840339
2016	2245148.1750608715