Year	kt
1990	955307.7
1991	932548.1
1992	892817.4
1993	887057
1994	875897.1
1995	874659.4
1996	904337.4
1997	872646.5
1998	865253.7
1999	833594.9
2000	830284.1
2001	847678.2
2002	833382.2
2003	836794.5
2004	821073.6
2005	802383.2
2006	814413.1
2007	783803
2008	789690.4
2009	734805.5
2010	773069.1
2011	746477.3
2012	760127.7
2013	776151.8
2014	736011.7
2015	742314.4
2016	747147.2
2017	732204.2
2018	707770.2
2019	658693.5
2020	603350.5