Year	TDS, current US$
1970	95557804.7
1971	94468727.2
1972	95260202.3
1973	228667228
1974	192020098.8
1975	269839816.8
1976	400276536.7
1977	138131601.6
1978	148866660.8
1979	391803107.2
1980	1150777021.2
1981	1790645497.7
1982	2090338334.9
1983	2565375212
1984	4067491742.7
1985	4428665434
1986	2050752904.8
1987	1106408447.1
1988	2210430888.8
1989	2117492334.5
1990	3335551233.7
1991	2944761131.1
1992	2414572768.9
1993	1490998007.2
1994	1871673345.8
1995	1832902393.8
1996	2228632518.2
1997	1415894564
1998	1331987636.3
1999	1072056304.1
2000	1854815173.4
2001	2565932175.7
2002	1494904903.4
2003	1646713323
2004	1731233187.4
2005	8998499717.6
2006	6875326518.9
2007	1328135550.8
2008	809361465.7
2009	870613385.3
2010	1388972679
2011	649601678.4
2012	1568787020
2013	1812922486.6
2014	3257346404.4
2015	1773156787.3
2016	3798143559.8
2017	3646725529.4
2018	6645135558.1
2019	7169878271.9
2020	6381874025.3
2021	7917428562.4
2022	7487656866.2