Year	kt
1990	17796.516556074206
1991	20377.199240268266
1992	21203.446918783615
1993	23258.335625740634
1994	22839.84654181727
1995	22823.75080782022
1996	23527.660879463278
1997	24503.53620605933
1998	24642.18515956477
1999	27708.46009285838
2000	29639.623464751858
2001	28910.780264798937
2002	30476.489992833925
2003	39487.36389423111
2004	47666.604801722504
2005	50024.72246303983
2006	51171.6476148755
2007	53296.18256460964
2008	53223.333763947245
2009	48109.347957446975
2010	55673.61923786905
2011	68117.28245463528
2012	69608.54721350093
2013	69234.51663880172
2014	76064.21778201054
2015	79148.55866908442
2016	77079.2518080908