Year	TDS, current US$
1970	41786781.4
1971	63811183.3
1972	70024526.3
1973	64217248.7
1974	63416754.8
1975	117557602.9
1976	127377687.2
1977	103795507.9
1978	127102803.9
1979	116608871.6
1980	263863232.4
1981	302994066.3
1982	295876557.1
1983	226070870.4
1984	171594460.7
1985	149281885.5
1986	247074582.9
1987	96515623.9
1988	178755284.6
1989	95679605.3
1990	49661471.8
1991	22157907.5
1992	26586369
1993	20266928.6
1994	3226554.1
1995	68991183.1
1996	47866804.2
1997	57531834.3
1998	61198549.7
1999	59627233.9
2000	247725341.5
2001	237808132.3
2002	145891255
2003	277701220
2004	327813865.8
2005	375683525.5
2006	303545827.1
2007	385073208
2008	366298558.4
2009	493537081.4
2010	496154079
2011	537840327.3
2012	367389762.1
2013	296826914.7
2014	261208147.4
2015	523130096
2016	293992017
2017	245101165.7
2018	215104441.1
2019	195573725
2020	147588339.1
2021	3065044860
2022	186338799