Year	kt
1990	8633047.304354005
1991	8782811.612763997
1992	8788972.650939995
1993	8848570.121608
1994	8783327.941787
1995	9196684.319368996
1996	9280494.579125993
1997	9419657.645027999
1998	9549766.236989003
1999	9579781.010278001
2000	9982802.178392999
2001	10299164.828219999
2002	10688639.769476
2003	11581012.403348003
2004	12544551.357687
2005	13453664.440000001
2006	14376661.629999997
2007	15277605.850000001
2008	15742026.63
2009	16165818.759999998
2010	17394871.89
2011	18600068.916999996
2012	19162590.625000004
2013	19740108.908999998
2014	20034092.372
2015	19863721.902
2016	19997090.908
2017	20537363.182
2018	21370666.057500005
2019	21669277.33000001
2020	21203591.306999996