Year	kt
1990	688618.9
1991	651932
1992	574642.6
1993	499314.9
1994	415669.9
1995	399250.1
1996	346111.3
1997	328244.8
1998	309288
1999	305725.1
2000	297376.8
2001	300552.9
2002	303940.8
2003	330228.5
2004	307135.6
2005	295405.2
2006	303989.4
2007	312141.5
2008	301195.3
2009	251616.6
2010	268924.6
2011	283342.4
2012	277110.2
2013	270268.7
2014	237728.7
2015	191067.8
2016	201655.4
2017	174938.3
2018	185623.8
2019	174599.9
2020	165663.6