Year	TDS, current US$
1970	30155920
1971	60701346.9
1972	105378815.2
1973	124211188.2
1974	116894739.6
1975	101659825
1976	106348540.6
1977	111104532.5
1978	138130693.9
1979	105253453.8
1980	149792168.6
1981	184382808.1
1982	232686648.5
1983	286757887
1984	412477440
1985	339959180.6
1986	321872232.5
1987	355522910.2
1988	498150294.8
1989	515719226.7
1990	553061044.1
1991	504598301.4
1992	662753313.6
1993	852019362.5
1994	897250257.3
1995	626284808.2
1996	489316297.9
1997	531811020.5
1998	311741249.2
1999	212361681.9
2000	305029603.2
2001	269041357.2
2002	276360551.3
2003	191349937
2004	251702432.9
2005	307800464.3
2006	326269320.4
2007	1007671532.3
2008	973728826.1
2009	542662344.4
2010	811688133.1
2011	1183958865.5
2012	483417685.3
2013	1263600665.6
2014	1168568342.2
2015	1098052598.7
2016	3318394711.1
2017	2785643516.8
2018	2779272499.3
2019	2363016658.1
2020	1305822714.3
2021	4055273348.3
2022	4452394972.9