Year	kt
1990	1260.416
1991	1304.384
1992	1348.352
1993	1384.992
1994	1425.296
1995	1470.8
1996	1529.8
1997	1640.6
1998	1882.2
1999	1907.1
2000	1963
2001	2152.6
2002	2210.9
2003	2378.2
2004	2377.8
2005	2657.5
2006	2963
2007	3660.73
2008	4055.5
2009	4745
2010	5140.8
2011	5363.7
2012	5673.9
2013	5737.6
2014	6947.2
2015	8432.6
2016	11066.4
2017	12660.5
2018	13555.7
2019	18093.2
2020	18652.8