Year	TDS, current US$
1970	9039288.9
1971	9496535.8
1972	9517049.9
1973	24524860.9
1974	13951504
1975	16677183.6
1976	20414116.4
1977	16025295.4
1978	22260349
1979	27422149.6
1980	57385845.9
1981	68312117.1
1982	63194083.8
1983	86049747.5
1984	128659523.6
1985	155204150.9
1986	171614275
1987	159895955.6
1988	201546173.6
1989	187810127.1
1990	144658327
1991	147232340.5
1992	113228781.5
1993	138033224.5
1994	148739837.6
1995	135286342.2
1996	148114789
1997	160916270.5
1998	153312447
1999	132373223.3
2000	75655758.9
2001	50948574.8
2002	71247923.4
2003	90865322.4
2004	103413639.4
2005	171761252.5
2006	99854589.4
2007	66620884.9
2008	74201276.7
2009	71828186.1
2010	63490401.6
2011	63627429
2012	68204397.2
2013	87342189.3
2014	206376623.3
2015	94794213.8
2016	844447261.9
2017	187852374.5
2018	529039203.1
2019	299858749.6
2020	692525367.8
2021	751596373.8
2022	1928561408.5