Year	kt
1990	2014.6
1991	2085.3
1992	1952.5
1993	1825.1
1994	1849.6
1995	1924.2
1996	1894.7
1997	1695.7
1998	2080.7
1999	2127.4
2000	2115.3
2001	2034.5
2002	2068.8
2003	2116
2004	2094.7
2005	1955.6
2006	1906.6
2007	1931.7
2008	1981.2
2009	2008.5
2010	1979.4
2011	2183
2012	2394.3
2013	2805.4
2014	2518.9
2015	2207.4
2016	2040.7
2017	2170.2
2018	2795.4
2019	2622.7
2020	2456