Year	kt
1990	0
1991	0
1992	140.1
1993	149.7
1994	159.2
1995	184.8
1996	191.1
1997	201.3
1998	214
1999	199.3
2000	187.3
2001	173.9
2002	158.3
2003	168.5
2004	149.7
2005	122.2
2006	120.8
2007	135.6
2008	117.1
2009	152.2
2010	105.2
2011	119.3
2012	132.4
2013	138.5
2014	141
2015	144.9
2016	147.1
2017	146.7
2018	147.8
2019	148.2
2020	107.5