Year	TDS, current US$
1970	723125713.0999998
1971	764626153.8
1972	891812064.1999999
1973	1026373388.6
1974	1160706250.1
1975	1327542765.2
1976	1608040991.4999998
1977	2020420419.0999994
1978	2579182151.0999994
1979	2982201986.1000004
1980	3771938270.200001
1981	4068316308.1000004
1982	4859734905.6
1983	6756157337.200001
1984	6891569282.4
1985	8156980171.399998
1986	11474064805.100004
1987	14589000636.500006
1988	17338645544.10001
1989	16898442541.900003
1990	20255368931.999996
1991	23422493899.900005
1992	24058266087.599995
1993	25668022162.800007
1994	28509229647.8
1995	28945194646.399994
1996	29452991352.300014
1997	28194236374.099995
1998	26546745188.1
1999	30754644168.3
2000	35309886735.50002
2001	31280568385.70001
2002	41195287065.40003
2003	46551303571.800026
2004	38437123975.1
2005	34475424371.7
2006	45115701989.09998
2007	36120180014.299995
2008	36903358220.7
2009	34048808914.600002
2010	32424963466.499992
2011	41901619376.19998
2012	37150321035.49999
2013	44920071742.200005
2014	39493293683.40001
2015	38622897440.30001
2016	42310071213.09998
2017	49097061272.59999
2018	53913460911.10001
2019	58425270179.79998
2020	55873511695.3
2021	60029662821.000015
2022	61154641384.3