Year	kt
1992	34117.768
1993	24169.197
1994	18606.358
1995	23105.767
1996	17960.966
1997	16123.799
1998	16138.467
1999	16182.471
2000	20249.174
2001	20810.225
2002	22768.403
2003	27443.828
2004	31642.543
2005	39907.961
2006	42988.241
2007	54117.586
2008	62845.046
2009	61011.546
2010	66614.722
2011	73904.718
2012	63156.741
2013	69357.638
2014	71279.146
2015	62889.05
2016	65800.648