Year	TDS, current US$
1970	3548000
1971	3428000
1972	3528000
1973	3562561.1
1974	3839372.2
1975	6142969.1
1976	7584422.4
1977	11041717.8
1978	21665023.5
1979	31869134.5
1980	70940279.7
1981	49013063.4
1982	55806877.4
1983	54402806.1
1984	145781229.6
1985	191981001.3
1986	173541375.2
1987	271113952.3
1988	301139555.5
1989	309306381.7
1990	428798449.2
1991	541651574.5
1992	530030358.7
1993	555748813.7
1994	652085188.8
1995	704875308.3
1996	691927486.9
1997	950704355.4
1998	690913001.8
1999	743555063.2
2000	646526156.1
2001	764656783.8
2002	943028286.8
2003	775304819.3
2004	1422204382.1
2005	1353537413.3
2006	2514541455.7
2007	23673288.5
2008	138961144.4
2009	1915090.9
2010	3291448.1
2011	1848812.5
2012	1574000
2013	5987000
2014	511000
2015	479000
2016	448000
2017	15107196.1
2018	16741724
2019	16104900.4
2020	16751632.6
2021	52754519.3
2022	77558456.1