Year	TDS, current US$
1970	1000000
1971	3009075
1972	2171400
1976	2389908.1
1979	3467868.9
1980	62476.1
1981	62531
1982	58525.9
1983	56663.6
1984	54339.2
1985	1624879.8
1986	2540952.3
1987	2827912.2
1988	2884723
1989	2740766.3
1990	790148
1991	138223.3
1992	61979
1993	61441.3
1994	63010.8
1995	66758.4
1996	1909097.4
1997	3321881.3
1998	3915659.9
1999	10591417.9
2000	13337053
2001	3316970.1
2002	3340337.3
2003	2393406.8
2004	1486567.4
2005	4688360.8
2006	859254.4
2007	773927.8
2008	225160.9
2009	346407.2
2010	467089.3
2011	760279.6
2012	1084523
2013	1885757.3
2014	2831074.1
2015	2694714
2016	2079527.5
2017	1646058.6
2018	1241858.4
2019	1535050.1
2020	28231899
2021	42964903.4
2022	35770166