Year	kt
1992	5922.205
1993	5636.179
1994	5251.144
1995	5445.495
1996	5023.79
1997	5551.838
1998	5636.179
1999	5269.479
2000	5152.135
2001	5621.511
2002	6186.229
2003	5859.866
2004	6101.888
2005	6054.217
2006	6204.564
2007	6285.238
2008	6175.228
2009	5577.507
2010	5606.843
2011	5760.857
2012	5551.838
2013	5284.147
2014	4140.043
2015	4231.718
2016	3850.35