Year	kt
1990	433.885181
1991	406.424094
1992	363.401723
1993	250.506142
1994	344.484085
1995	356.078767
1996	367.368325
1997	449.751587
1998	389.947441
1999	422.900746
2000	459.820652
2001	529.083617
2002	674.322257
2003	753.349164
2004	951.984363
2005	912.013225
2006	998.668212
2007	1173.198679
2008	1239.105288
2009	1290.671108
2010	1313.250224
2011	1281.212289
2012	1418.6
2013	1453.1
2014	1519.6
2015	1969.4
2016	1730.2
2017	1512.1
2018	1768.9
2019	1824.6
2020	1742.7