Year	kt
1992	119639.542
1993	77590.053
1994	59874.776
1995	69951.692
1996	52852.471
1997	43846.319
1998	43156.923
1999	37410.734
2000	29112.313
2001	34334.121
2002	41158.408
2003	44711.731
2004	46688.244
2005	37183.38
2006	38360.487
2007	41411.431
2008	39599.933
2009	39493.59
2010	38184.471
2011	34759.493
2012	32551.959
2013	27601.509
2014	29955.723
2015	29490.014
2016	33109.343