Year	kt
1990	214950.6
1991	222099.7
1992	232369.6
1993	218079.8
1994	228452.7
1995	240567.3
1996	230113.2
1997	248603.1
1998	256215.5
1999	278300.5
2000	293314.3
2001	294786.8
2002	312753.3
2003	318657.7
2004	335560.3
2005	350499.8
2006	341776.3
2007	354683.1
2008	324274.2
2009	288131.2
2010	274140.6
2011	275470.1
2012	270280.4
2013	243794.9
2014	241979.9
2015	257251.2
2016	248252.1
2017	264723.7
2018	258373.2
2019	241886.5
2020	202705.8