Year	kt
1992	76907.991
1993	81616.419
1994	78217.11
1995	78349.122
1996	81323.059
1997	82573.506
1998	94432.584
1999	97014.152
2000	95444.676
2001	96918.81
2002	102136.951
2003	100376.791
2004	99878.079
2005	95532.684
2006	98011.576
2007	98605.63
2008	102653.998
2009	86200.169
2010	85268.751
2011	95209.988
2012	98323.271
2013	86049.822
2014	87747.643
2015	86016.819
2016	75012.152