Year	kt
1990	17796.516556074206
1991	20377.199240268266
1992	21203.446918783615
1993	23258.335625740634
1994	22839.84654181727
1995	22823.75080782022
1996	23527.66087946327
1997	24503.53620605932
1998	24642.18515956477
1999	27708.46009285838
2000	29639.623464751858
2001	28910.780264798937
2002	30476.489992833925
2003	39487.3638942311
2004	47666.60480172249
2005	50024.72246303982
2006	51171.64761487549
2007	53296.18256460962
2008	53223.33376394724
2009	48109.34795744697
2010	55673.61923786903
2011	68117.28245463528
2012	69608.54721350092
2013	69234.51663880171
2014	76064.21778201053
2015	79148.5586690844
2016	77079.25180809079