Year	TDS, current US$
1970	649290000
1971	320519718.3000001
1972	514719318
1973	601824831.9000001
1974	500394209.3000001
1975	584958022.2
1976	1031358747.1000001
1977	1315090140.6000001
1978	2016343905.6999998
1979	1557298696.4
1980	2191226553.3
1981	2078824174.1999996
1982	2182273048.2999997
1983	3512903954.900001
1984	5394950407.600001
1985	5907866861.799999
1986	9115729417.599998
1987	10172343758.3
1988	9704013378
1989	9500528097.8
1990	9491825995.000004
1991	7943196217.599999
1992	6463688809.600001
1993	6251490020.200002
1994	5818462548.500001
1995	9802377356.599998
1996	8376829222.200004
1997	9755479160.600002
1998	8517617816.800001
1999	19200674276.399998
2000	23554489189.4
2001	14511037153.100006
2002	23331972433.399998
2003	29631486970.800003
2004	24877463070.600006
2005	47283656964.8
2006	30650978522.100002
2007	8544580952.8
2008	4973107647.999999
2009	2508480039.4000006
2010	3936240647.299999
2011	4730984612.299999
2012	10368605805.4
2013	15699108343.500004
2014	11357848898.1
2015	5627109329.9
2016	2785666189.900001
2017	4113285613.3000007
2018	6288014768.099999
2019	8372483559.499999
2020	8412259594.999996
2021	15563581652.500002
2022	29752279680.20002