Year	TDS, current US$
1970	8825881.4
1971	8644367.2
1972	7694184.7
1973	12083585
1974	18424565.1
1975	29210978.1
1976	23345598.9
1977	37583731.6
1978	20433591.9
1979	75911959.1
1980	108857225.2
1981	241003424.1
1982	240976589.8
1983	332346163
1984	361119984.1
1985	422674681.2
1986	362410523.6
1987	452317680.2
1988	434396710.5
1989	351307883.3
1990	519476213.7
1991	321940127
1992	185029933.1
1993	158290974.1
1994	556405141.8
1995	186560766.7
1996	364281439.3
1997	135767652.3
1998	45713270.6
1999	26717618.4
2000	45038941.1
2001	93996817.4
2002	29831155.5
2003	64942363.2
2004	212232017.1
2005	112368096.1
2006	87757996.9
2007	108474129.7
2008	167492239.6
2009	175833780.2
2010	120561067.3
2011	131363309.5
2012	170908515.5
2013	437311400.8
2014	487538145.5
2015	415952279.7
2016	361139488
2017	414736134.7
2018	476354414.3
2019	505263601.7
2020	641093437.4
2021	391576911.4
2022	835934820.1