Year	kt
1990	2900
1991	6966.2
1992	6846.8
1993	5766.9
1994	4619.3
1995	4679.5
1996	4755.4
1997	4862.4
1998	5040.5
1999	4788.4
2000	5209.1
2001	5156.8
2002	5133.3
2003	5206
2004	5122.6
2005	5016.3
2006	5091.7
2007	6131.5
2008	6393.5
2009	7032.4
2010	7014.4
2011	6801.5
2012	6866.7
2013	7526.8
2014	8222.8
2015	8500.2
2016	8974.7
2017	9076
2018	9749.7
2019	9557.3
2020	9928.4