Year	TDS, current US$
1970	62089445.7
1971	61905752
1972	71791969.3
1973	85126341.9
1974	113899010.6
1975	148362365.6
1976	177913562
1977	220705550.8
1978	422081382
1979	400953414.2
1980	370453393
1981	344499569.9
1982	261943173.9
1983	721524127.7
1984	439823975.4
1985	549263611.9
1986	525574753.6
1987	347555318.1
1988	420754283.8
1989	356093426.7
1990	513566556
1991	428226226.9
1992	554137144.8
1993	560949751.8
1994	518398597.5
1995	660333385.5
1996	607016558
1997	576248704.7
1998	555035531.1
1999	562124939.4
2000	651595641.9
2001	696960852.1
2002	673941500.2
2003	826329131.7
2004	907362417.8
2005	837445030.2
2006	784472075.1
2007	900540421.6
2008	1571897129.9
2009	1253791111.5
2010	997423117
2011	1624092068.3
2012	2287684885.4
2013	3287564284.2
2014	3464423496.1
2015	2767216331.8
2016	2829487077.5
2017	2958619532.6
2018	3415638965.9
2019	3144962495.9
2020	3000404115.5
2021	3069623245
2022	1838541044.5