Year	kt
1990	197897.4
1991	205475.4
1992	207865.4
1993	215259.5
1994	222497.5
1995	241283.8
1996	262414.1
1997	281335
1998	290587.2
1999	300958.7
2000	313670.8
2001	319375.7
2002	317756.5
2003	310808.1
2004	328517.3
2005	331689.1
2006	335624.6
2007	352555.8
2008	373633.1
2009	350000.9
2010	397931.1
2011	418295.4
2012	454232.9
2013	486844.7
2014	511618
2015	485344.1
2016	447077.3
2017	455684.8
2018	433838.8
2019	434318
2020	414138.8