Year	kt
1990	19845.2
1991	20689.6
1992	10755.96
1993	4974.49
1994	2707.87
1995	3436.76
1996	2481.91
1997	3324.3
1998	3492.5
1999	3103
2000	3561
2001	3602
2002	3118.7
2003	3495.4
2004	3763.8
2005	4460.9
2006	4489.2
2007	5204.4
2008	5685.5
2009	4510.8
2010	4336.6
2011	4937.1
2012	5716.5
2013	5501.5
2014	5479
2015	5343.4
2016	5066.7
2017	5371.3
2018	5712.2
2019	6195.6
2020	6746.6