Year	TDS, current US$
1970	7142300
1971	4874763.9
1972	3448190.9
1973	2726473
1974	7219339.7
1975	16900581.8
1976	8182374.7
1977	11637086.3
1978	16919383
1979	26392352
1980	44213412.3
1981	79415813
1982	88305957.9
1983	118392080.1
1984	128380891
1985	136469608.9
1986	128294246.7
1987	127486545.4
1988	198876365.3
1989	140482150.6
1990	151169044
1991	167767974.7
1992	180173699.3
1993	124896504.6
1994	148169882.8
1995	209677533.3
1996	178766516.9
1997	199131836.7
1998	214291236.5
1999	163445761
2000	453545592.7
2001	170073213.4
2002	234141622.4
2003	771182786.4
2004	622332179.8
2005	799842570.4
2006	1395659824.3
2007	1602710827.3
2008	1321366031.4
2009	1982378569.4
2010	2211517380.6
2011	1439524045.4
2012	3295180916.2
2013	2492598690.5
2014	6234447384.8
2015	4303548940.4
2016	1798388597.2
2017	2935675471.6
2018	3219804215.5
2019	3218946512.9
2020	2667916647.1
2021	2805959146.6
2022	905124692.2