Year	kt
1990	841.8
1991	863
1992	896.7
1993	914.8
1994	948.5
1995	1001
1996	1062.1
1997	1050.9
1998	988.3
1999	1109.2
2000	1118.7
2001	1178.8
2002	1269.7
2003	1303.6
2004	1413.5
2005	1448
2006	1459.4
2007	1716.9
2008	1797.1
2009	1994.7
2010	2073.7
2011	2182.9
2012	2355.4
2013	2101.2
2014	2534.5
2015	2966.5
2016	2584.2
2017	3408.3
2018	3716.1
2019	3824.8
2020	3847.1