Year	kt
1990	263437.5
1991	264709.7
1992	268366.5
1993	273016.9
1994	280096.3
1995	290141.5
1996	300180.4
1997	307778.5
1998	327536.9
1999	333677.7
2000	339422.8
2001	345609.4
2002	353315.8
2003	352893.5
2004	366141.6
2005	368801.9
2006	374104.4
2007	384368.3
2008	387570.3
2009	393859.7
2010	395993.2
2011	394436.7
2012	395690
2013	388427.4
2014	379267.2
2015	385782.4
2016	394803.6
2017	397149.4
2018	396059.9
2019	395199.1
2020	378996.8