Year	kt
1990	722.47
1991	792.02
1992	792.69
1993	885.5
1994	907.53
1995	909.27
1996	926.59
1997	922.39
1998	896.45
1999	932.68
2000	875.23
2001	847.28
2002	859.92
2003	893.44
2004	898.57
2005	854.327
2006	861.944
2007	927.19
2008	1009.897
2009	1036.69
2010	984.46
2011	1072.59
2012	1076.42
2013	1154.33
2014	1045.6
2015	1089.52
2016	1223.57
2017	1394.6
2018	1609.4
2019	1643.7
2020	1640