Year	TDS, current US$
1970	0
1971	0
1972	0
1973	6856000
1974	1900000
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	3140000
1986	4650000
1987	4824085.5
1988	33189100.5
1989	41187129
1990	18470726.2
1991	7784298.2
1992	17921777.1
1993	52614672.8
1994	41723142
1995	18446573.3
1996	34400046.3
1997	38836012.5
1998	29759557.4
1999	55545230.8
2000	56524502.8
2001	72154529.1
2002	92995630.7
2003	108884166.9
2004	108355701
2005	88124848.3
2006	99833103.4
2007	84523890.8
2008	62425501.1
2009	16761932.3
2010	4792065
2011	388461.5
2012	8883346.8
2013	6786546.3
2014	20458803.2
2015	76520924.2
2016	304262959.9
2017	526326875
2018	518456769.1
2019	428082787.6
2020	207023710.3
2021	33292101.9
2022	69514216.9