Year	TDS, current US$
1970	1360639537.8
1971	576982877.2
1972	640550924.6
1973	694863198.4
1974	815557094.3
1975	860863583.7
1976	1205891291.3
1977	1224345718.2
1978	1305458446.3
1979	1281433214.9
1980	1398322464.8
1981	1551391547
1982	1974533452.8
1983	2480386349.9
1984	2871865636.4
1985	3404463637.6
1986	4979874029.6
1987	5236762885.4
1988	5576213792
1989	6529933340.3
1990	7694369986.1
1991	7447476722.2
1992	7271664522.3
1993	7929947248.6
1994	10450716133
1995	13137306195
1996	11705406720.7
1997	12176495139.1
1998	11785462214.1
1999	9929098431
2000	10667604836.1
2001	11770191324.3
2002	15444032291.1
2003	25762255084.3
2004	17508281941.5
2005	23922412358.1
2006	17401332481.4
2007	39403398367.1
2008	30974407767.4
2009	16525348845.3
2010	24412612396.9
2011	29280766491.7
2012	30465608110.3
2013	38743862600
2014	92816434569.4
2015	49662625593.8
2016	76980765505.3
2017	51224947893.9
2018	63647119390.1
2019	51257621931.8
2020	76366469390
2021	49294915667.3
2022	64048702789.1