Year	kt
1990	2740.8
1991	2876.2
1992	2848
1993	2514.4
1994	2143.8
1995	2129.5
1996	1761.9
1997	2285.5
1998	2173
1999	1764
2000	1807.2
2001	1835.28
2002	1922.95
2003	2084.2
2004	2106.2
2005	2293.1
2006	2177.5
2007	1981.6
2008	2185.9
2009	2485.2
2010	2656.9
2011	3050.7
2012	4030.3
2013	4238.6
2014	4686
2015	4956.6
2016	5315.3
2017	6810.7
2018	7857.2
2019	7615.7
2020	7607.1