Year	kt
1990	406.704
1991	406.704
1992	406.704
1993	410.368
1994	406.704
1995	425.024
1996	454.336
1997	465.328
1998	490.976
1999	512.96
2000	523.952
2001	523.952
2002	531.28
2003	534.944
2004	560.592
2005	575.248
2006	545.936
2007	538.608
2008	538.608
2009	516.624
2010	516.624
2011	490.976
2012	487.312
2013	476.32
2014	461.664
2015	465.328
2016	468.992
2017	465.328
2018	494.64
2019	479.984
2020	448.884399