Year	kt
1990	3848.7
1991	4371.7
1992	4768.6
1993	4490.1
1994	4266.2
1995	4687.9
1996	5450.5
1997	5558.4
1998	5777.4
1999	6783.2
2000	5458.5
2001	4946.3
2002	4530.6
2003	4486.1
2004	5459.9
2005	5415.8
2006	6332.1
2007	5854.7
2008	7750.1
2009	7665.9
2010	6283.8
2011	7605.9
2012	8517.7
2013	7357.6
2014	6500.4
2015	6657.2
2016	6525.1
2017	6103.8
2018	6545.7
2019	6806.7
2020	6514.3