Year	TDS, current US$
1970	8410000
1972	3257100
1973	7130701.5
1982	6480000
1983	6760000
1984	9940000
1985	59530000
1986	64830000
1987	25261285
1988	31846212.1
1989	19653268.9
1990	18951331.6
1991	8409724.3
1992	35304055.6
1993	32408873.4
1999	1466349.6
2000	1584422
2001	785777.4
2002	718710
2003	607841
2004	910625
2005	1198647.8
2006	1694698.4
2007	1495845
2008	349579
2009	724422.1
2010	990108.6
2011	338867.8
2012	92321.3
2013	396643.7
2014	151963.2
2015	141311.6
2016	236309.9
2017	148381
2018	269045.7
2019	2757839.8
2020	877632.3
2021	462983.9
2022	9591259.7