Year	TDS, current US$
1970	23302744.3
1971	26166744.3
1972	29189744.3
1973	33265567.3
1974	35174200.5
1975	34334697.4
1976	36030362.9
1977	40511574.8
1978	49460687
1979	56668946.3
1980	72709921.6
1981	90260899.2
1982	102454815.1
1983	125281769.6
1984	147846173
1985	174534062.4
1986	234380212.4
1987	168969724.9
1988	73809650.2
1989	66799944.6
1990	52018006.7
1991	712296884.3
1992	416530167.4
1993	1248202210.4
1994	417900910.4
1995	455722610.7
1996	455248186.5
1997	507760540
1998	519632706.1
1999	586449662.8
2000	886214891.8
2001	709336964.8
2002	732233316
2003	784862468.4
2004	830493572
2005	912056202.2
2006	1039620264.9
2007	1435228383.5
2008	1367979338.2
2009	968145419.8
2010	2123869298.9
2011	779626757
2012	971623675.7
2013	2382854518.7
2014	499702809.6
2015	530811159.7
2016	658703844.6
2017	3363112172.3
2018	1036029052.3
2019	696494911.2
2020	227817012.9
2021	363144093.8
2022	929707487.5