Year	kt
1990	198.970856
1991	206.329151
1992	206.950491
1993	215.03442
1994	201.11109
1995	204.201614
1996	205.960367
1997	218.376491
1998	229.238713
1999	226.566397
2000	216.859998
2001	214.67105
2002	220.018273
2003	229.354516
2004	229.39083
2005	228.986322
2006	231.1208
2007	200.793925
2008	219.535867
2009	205.374673
2010	190.830439
2011	176.781993
2012	185.325447
2013	192.544887
2014	161.25917
2015	159.773794
2016	149.838256
2017	155.769397
2018	142.950403
2019	149.025716
2020	141.996093