Year	TDS, current US$
1970	9000000
1971	11536000
1972	49334000
1973	10994000
1974	13379000
1975	33422000
1976	24592000
1977	44056205.7
1978	60589430.7
1979	86311797.1
1980	120504029.7
1981	101703083.9
1982	54934817.2
1983	13072224.8
1984	22739635.4
1985	47225348.9
1986	60835840.1
1987	70678157.1
1988	69293841.2
1989	36838822.4
1990	61305797.1
1991	92171251.5
1992	53848229.1
1993	12066469.7
1994	31575607.6
1995	103807601
1996	89096523
1997	15672121
1999	7201102
2000	7780944.5
2001	3858877.3
2002	3529515.6
2003	2985048.7
2004	4471991.7
2005	5886444.5
2006	8322501.5
2007	7345951.4
2008	1716749.2
2009	3239538.1
2010	4427659.5
2011	1515380.5
2012	412850.9
2013	1775000.5
2014	682314.7
2015	629606.1
2016	1055054.4
2017	45026011.1
2018	149456314.3
2019	306029031.1
2020	356692059.7
2021	989869493.1
2022	1859459801.9