Year	kt
1990	7466.8
1991	7405.3
1992	8148.5
1993	8327.1
1994	8384.8
1995	8682.8
1996	9047.7
1997	9204.3
1998	9731.1
1999	9986.5
2000	10071.4
2001	10086.3
2002	10251.4
2003	10597
2004	10572
2005	10563.7
2006	12059.8
2007	12029.5
2008	9625.4
2009	7889
2010	7479.8
2011	7529.4
2012	6959
2013	7402.3
2014	7191.3
2015	7088.7
2016	7549.5
2017	7225
2018	8589
2019	8394.3
2020	5835.6