Year	kt
1990	405262
1991	404074.1
1992	402274.3
1993	396927.9
1994	392285.5
1995	416415
1996	412153.5
1997	415517.3
1998	426372.2
1999	433010.6
2000	436296.6
2001	436571.4
2002	443473.1
2003	462197.8
2004	472404.8
2005	473831.8
2006	466654.5
2007	459371.1
2008	444984.5
2009	397057.1
2010	405272.3
2011	396687.4
2012	376747.2
2013	346458.3
2014	327498
2015	337862.1
2016	333344.8
2017	329193.3
2018	324884.2
2019	317223
2020	281286.8