Year	TDS, current US$
1970	27000000
1971	24436000
1972	27099000
1973	24754000
1974	28506000
1975	30817000
1976	30918000
1977	31913000
1978	40184600.5
1979	56344111.1
1980	59343999
1981	81003958.7
1982	73828941.7
1983	74780001.3
1984	57592985.9
1985	76621602.8
1986	114306456.7
1987	134285878.7
1988	128032768.7
1989	93820611
1990	68571807.4
1991	103711266.7
1992	84080081.4
1993	28198750
1994	15721182.5
1995	36972043
1996	48142643.3
1997	68496256.8
1998	83907190.3
1999	104726547.8
2000	90735239.3
2001	76690272.9
2002	58058184.8
2003	38353176.3
2004	122374617.7
2005	52233469.9
2006	170777441.8
2007	19697733
2008	86787010.5
2009	101115006.2
2010	46350450.5
2011	35705958.4
2012	84626509.1
2013	488914435.4
2014	741296155.8
2015	517385094.7
2016	461171376.1
2017	245885369.7
2018	16425949.3
2019	27172183.5
2020	33056090.6
2021	71796689.9
2022	175051529.7