Year	kt
1990	8932851.548354004
1991	9042337.602764
1992	9027596.935912002
1993	9090520.142019002
1994	9033243.735341998
1995	9453145.487407
1996	9542421.227775998
1997	9665417.822844997
1998	9747255.073862
1999	9737601.162755
2000	10112500.232393
2001	10424840.67822
2002	10813590.109476004
2003	11713930.133348003
2004	12668614.817687
2005	13582248.01
2006	14512525.17
2007	15401788.089999996
2008	15864152.260000004
2009	16269906.919999996
2010	17493003.360000003
2011	18681912.707000002
2012	19248774.835
2013	19792020.549000002
2014	20038180.862
2015	19836736.512
2016	19913335.898000002
2017	20409330.841999996
2018	21214156.117499992
2019	21462940.420000006
2020	20952613.306999996