Year	TDS, current US$
1986	4349428.1
1987	7149606.8
1988	30307485.6
1989	40849341.7
1990	35598953
1991	45521856.7
1992	70846409.6
1993	65458449.7
1994	47304935.1
1995	85902137.5
1996	97261920.6
1997	265505979.7
1998	271318508
1999	123490376.3
2000	138270984.5
2001	209052444.2
2002	155182526.9
2003	223132778.1
2004	254267631.8
2005	289523266.7
2006	511507150.1
2007	362493815.4
2008	781766074.7
2009	270915154.2
2010	235633583.1
2011	240215159.3
2012	251549790.3
2013	258665041
2014	297739689.1
2015	231424740.4
2016	272108925.1
2017	272636803.2
2018	285268982.2
2019	276750695.8
2020	286711292.3
2021	281581504.1
2022	333150610.8