Year	kt
1990	8813945.259535003
1991	8960270.369657997
1992	8951857.255663002
1993	9003257.939750003
1994	8935097.029872
1995	9346332.181135995
1996	9424897.812450998
1997	9563289.519615002
1998	9692178.779430002
1999	9729521.185023997
2000	10139747.416044999
2001	10461682.279837003
2002	10849988.601732993
2003	11749704.856511997
2004	12719151.464049997
2005	13646458.170224996
2006	14578574.38021199
2007	15475011.214679
2008	15953145.392287998
2009	16362071.531108003
2010	17591125.597223993
2011	18781990.744189
2012	19332864.235000007
2013	19895263.018999998
2014	20194597.151999995
2015	20008374.911999997
2016	20146301.187999997
2017	20716381.032
2018	21553786.3975
2019	21860472.61
2020	21383256.243