Year	TDS, current US$
1970	127384219.6
1971	179922824.4
1972	274551921.4
1973	396740632.7
1974	591576657.3
1975	600940065.5
1976	462100807.3
1977	925783297.1
1978	986981702.7
1979	3121229468.4
1980	6046361905.5
1981	5707442173.4
1982	5946716707.4
1983	4659895875.6
1984	4751341491.2
1985	4307282319.5
1986	5105199338
1987	4874058871.2
1988	5553592776.3
1989	3832620632.1
1990	4991160001.7
1991	3322248579.5
1992	3331693184.6
1993	3945184325.8
1994	3689731571.6
1995	5171903854.9
1996	4941774043.3
1997	5014432464.3
1998	7491567760.4
1999	6850770070.6
2000	7208345206.2
2001	8251757787.9
2002	8498947536.2
2003	9638862812.8
2004	10069232349.1
2005	7459321043.3
2006	6626993338.6
2007	12050746406.2
2008	12167077839.3
2009	12699402095.5
2010	16927056582.9
2011	22853808647.1
2012	25633717467.8
2013	24911089109.9
2014	24583038735.8
2015	27839750871
2016	5935635237.5
2017	4490636696.6
2018	4816854136.4
2019	1156209373.3
2020	926692924.5
2021	5380232888.3
2022	19332416329.1