Year	kt
1990	247675.8
1991	274792.7
1992	297049.9
1993	327604.4
1994	354277.1
1995	385406
1996	409990.3
1997	431637.6
1998	366567.2
1999	401878.5
2000	447237.3
2001	456674
2002	461000.1
2003	463913.9
2004	485909.6
2005	481002.1
2006	487852.1
2007	503693.8
2008	514924.5
2009	526639.5
2010	575215.7
2011	598480.8
2012	600316.3
2013	599601.4
2014	588088.6
2015	607827.1
2016	615443.6
2017	626178.4
2018	630186.6
2019	612133.7
2020	569681.8