Year	kt
1990	2383.3
1991	3066.3
1992	3353.9
1993	3923.3
1994	4459.3
1995	4961.4
1996	4389.9
1997	5319.2
1998	5666.2
1999	5606
2000	5631.6
2001	5868.6
2002	5935.3
2003	6510.2
2004	6676.8
2005	6836.3
2006	7235
2007	7629
2008	6909.8
2009	6676.8
2010	6539.2
2011	6778.7
2012	6771.6
2013	6455.8
2014	6592.2
2015	6997.6
2016	7125.1
2017	6344.9
2018	6844.9
2019	7912.7
2020	6376.3