Year	TDS, current US$
1993	844000
1996	820215.9
1997	47680126
1998	88240117.7
1999	79436213.4
2000	65534078.8
2001	83304507.6
2002	96998349.2
2003	83985792.5
2004	101628977.2
2005	72713386.8
2006	68324705
2007	65079879.4
2008	126971671.1
2009	466445307.8
2010	694627382.1
2011	590325362.7
2012	441905736.4
2013	444115878.4
2014	429242697.6
2015	314093368.8
2016	633323832.7
2017	682249682.9
2018	554541532.2
2019	519024237.7
2020	339570031.5
2021	499521344.8
2022	477510061.8