Year	kt
1990	938.8
1991	1182.25
1992	1234.16
1993	1409.8
1994	1744.5
1995	1895.7
1996	1959.1
1997	2191.37
1998	2315.7
1999	3123.7
2000	3221
2001	3464.6
2002	2786.7
2003	3021.8
2004	2809.6
2005	3188.6
2006	2616.1
2007	2693.6
2008	2994.9
2009	3882.8
2010	4640.9
2011	5199.2
2012	5997.8
2013	6087.8
2014	7132.2
2015	7186.2
2016	10735.7
2017	13265.3
2018	15139.4
2019	13860.5
2020	14949.2