Year	TDS, current US$
1970	5874000
1971	5467000
1972	7170000
1973	5788000
1974	5726000
1975	5369000
1976	5020000
1977	3848000
1978	3195000
1979	3236000
1980	3277000
1981	3468373
1982	4502715.4
1983	6793644.6
1984	13649002
1985	17804341.6
1986	30204724.6
1987	39964918
1988	70464764.2
1989	78245110.6
1990	90286447.5
1991	89998281.1
1992	102544256.2
1993	134849968.1
1994	151781106
1995	160536237.2
1996	170512884.2
1997	179462885.7
1998	172172682.5
1999	187837351.6
2000	112701269
2001	15094643
2002	1347115.1
2003	1951207.7
2004	11058232.4
2005	6955987.1
2006	0
2007	2818249.1
2008	2896881.2
2009	0
2010	214445
2011	0
2012	5305000
2013	50763675.7
2014	5050639.9
2015	67422526.5
2016	116757443.5
2017	70398085
2018	50701000
2019	16177509.3
2020	9135529.1
2021	20165936.9
2022	7881546