Year	kt
1990	1395.5
1991	1447.7
1992	1503
1993	1544.2
1994	1584.1
1995	1614.7
1996	1644.1
1997	1674.7
1998	1705.6
1999	1725
2000	1747.5
2001	1770.8
2002	1800.8
2003	1825.1
2004	1871.9
2005	1901.5
2006	1923
2007	1959.3
2008	2007.4
2009	2101.7
2010	2158.8
2011	2885.2
2012	2919.6
2013	2206.5
2014	2349
2015	2144.2
2016	2126.2
2017	2402.3
2018	2276.6
2019	2300.1
2020	2311.9