Year	TDS, current US$
1970	25690000
1971	35507716.5
1972	44209963
1973	23240420.6
1974	30316340.900000002
1975	26695599
1976	75615243.69999999
1977	45512283.2
1978	98261330.60000001
1979	151406773.89999998
1980	271572948.7
1981	278720989.2
1982	248007270.10000002
1983	301968429.90000004
1984	460082205.3
1985	546541278.9
1986	695006703.4000001
1987	646592492.8000001
1988	540534707.7
1989	754253644.8000001
1990	456495178.79999995
1991	232828020.99999997
1992	134087571.89999999
1993	99705615.8
1994	229254342.30000007
1995	212740374.09999996
1996	286392438.99999994
1997	254573901.2
1998	272681069.6
1999	305531222.9000001
2000	306210424.7
2001	286586046.90000004
2002	666078310.2
2003	184952428
2004	275681385.79999995
2005	268328749.1
2006	305765023.8
2007	306485747.3
2008	1144581363.9999998
2009	275431636.6999999
2010	130075057.4
2011	72943585.3
2012	63508700.39999999
2013	97387142.39999999
2014	173014641.6
2015	350338008.8
2016	356869724.79999995
2017	391881194.59999996
2018	413612483.1999999
2019	417365070.2
2020	782445423.9000001
2021	1750396719.7999995
2022	439222683.90000004