Year	kt
1990	49364.4
1991	51098.7
1992	53199.4
1993	56659.9
1994	57514.5
1995	60043.3
1996	59253.3
1997	64837
1998	65071.4
1999	55922.1
2000	58995.5
2001	59588.3
2002	57373
2003	56716
2004	56608.9
2005	58187
2006	58193
2007	59709.9
2008	60298.1
2009	62670.6
2010	64146.1
2011	69771.1
2012	70223.2
2013	77725.4
2014	80091
2015	81017.2
2016	83526.2
2017	75674
2018	79355.2
2019	79186.7
2020	79057.6