Year	TDS, current US$
1980	971569910
1981	755113186
1982	1177813279.3
1983	1059120310.7
1984	756001052.9
1985	595470289
1986	554362382.6
1987	438241545.2
1988	626106638.9
1989	459500439.6
1990	653527954.1
1991	802952866.8
1992	1070880924.9
1993	1805523978.1
1994	3266706431
1995	5722658386.1
1996	6468416701.4
1997	6243002158.4
1998	2735392101.1
1999	3911732819.5
2000	2980231224.5
2001	1225738956.9
2002	1385535369.6
2003	1582426597
2004	2114260007
2005	2818897567.9
2006	2844256413.6
2007	2887195423.3
2008	2859620071.6
2009	2403318244.5
2010	1807534687.7
2011	1653826970.1
2012	599393562.3
2013	438630396.2
2014	511307639.4
2015	729458588.4
2016	2085904499.7
2017	490443581.4
2018	193817393.5
2019	334004222.2
2020	328100062
2021	344318991.5
2022	281244297.9