Year	TDS, current US$
1970	5563857318.899999
1971	5998009553.8
1972	7134822148.3
1973	9318819573.399998
1974	11871743910.100002
1975	14027699271.399996
1976	15799541244.9
1977	20597343485.500004
1978	30523750785.699997
1979	39294147422.899994
1980	46235234037.30002
1981	58094543515.4
1982	62649627046.200005
1983	56987153074.99999
1984	61382287764.4
1985	60687758438.799995
1986	61800407008.799995
1987	63278455731.10001
1988	76376914545.59998
1989	75351524317.4
1990	69741707587.3
1991	73540079400.1
1992	84022223919.69998
1993	93542614701.90001
1994	104006947094.19998
1995	130533635059.10002
1996	163667909678.30002
1997	188379728824.60007
1998	195417766611.89996
1999	243828057518.09995
2000	257914410952.30002
2001	241750133277.8
2002	234705193532.19998
2003	258965564681.8
2004	255097500233.7
2005	310810487662.60004
2006	352808601662.3
2007	344032316791.40015
2008	399369908007.50006
2009	401667409877.80005
2010	392730878054
2011	412545816145.19995
2012	459607477161.69995
2013	498698636243.7999
2014	562299919054.5
2015	670740789715
2016	752960174215.1
2017	787193449840.6
2018	866594328209.6
2019	984343915266.0001
2020	946092993472.7002
2021	1021152607932.7998
2022	1093922650531.0997