Year	TDS, current US$
1970	12000
1971	15036.4
1972	30550.7
1973	45588.1
1974	66446.1
1975	44897.1
1976	141419.2
1977	172000
1978	176000
1979	151000
1980	2057948.8
1981	52000
1982	194000
1983	281912.5
1984	599032.2
1985	6016339.9
1986	4392347.1
1987	3086958.1
1988	3648187.1
1989	4248196.1
1990	4749400.7
1991	5682164.3
1992	5913141.5
1993	7584955.4
1994	9865446.2
1995	5906808.9
1996	14567444.3
1997	13413139.7
1998	13389734.6
1999	17177141.8
2000	15178152.1
2001	10947837.5
2002	13418098.5
2003	16134546.4
2004	20024876.3
2005	31097582
2006	31066281.8
2007	42995407.1
2008	114199645.7
2009	54842022.3
2010	49289888.8
2011	56110551.4
2012	57473881.6
2013	72618755.2
2014	78292613.6
2015	36827012.7
2016	20881493.1
2017	15569397.7
2018	18067906.3
2019	25350458.4
2020	35273883.3
2021	67860895.2
2022	19775853