Year	TDS, current US$
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	26092717
1977	6596798.8
1978	12174507.5
1979	40963232.5
1980	100534570.9
1981	139440086.3
1982	56809901.8
1983	47795762.5
1984	104547947
1985	174692065.3
1986	194598682.3
1987	247246496.6
1988	180494130.5
1989	391280930.1
1990	189908390.5
1991	60210615.7
1992	8726354.6
1993	2926838.7
1994	5469046.9
1995	17454300
1996	41796891
1997	71556.7
1998	1048789
1999	7310074.5
2000	5000098.2
2001	2722751.1
2002	503250009.6
2003	2675976.2
2004	4902586
2005	5992194.4
2006	9345705.4
2007	73171983.4
2008	141957549.5
2009	155804879.2
2010	59262404.5
2011	861640.1
2012	234745.7
2013	1009259
2014	387506.1
2015	38775340
2016	78924742.9
2017	92241682.1
2018	94487441.2
2019	80129340.5
2020	50494505.3
2021	8209772.5
2022	24028333.7