Year	TDS, current US$
1970	18370000
1971	20206000
1972	20975000
1973	27182000
1974	31099000
1975	37281000
1976	45104000
1977	56416000
1978	74574000
1979	94264000
1980	110818000
1981	128908000
1982	169849208.5
1983	216513276.5
1984	257861703.9
1985	316634353.4
1986	463244968.3
1987	586609192.4
1988	1027021658.6
1989	745344176
1990	722806034.4
1991	763581352.9
1992	1057815936.5
1993	529385148.1
1994	716585382.8
1995	578916058.4
1996	481561069.4
1997	453707030.4
1998	507049867.3
1999	637497623.7
2000	1104199524
2001	690957817.6
2002	2574650800.3
2003	720054979
2004	2029652183.7
2005	582070988.3
2006	259402518.8
2007	376183511
2008	39308347.2
2009	74349303.3
2010	28971000
2011	81664000
2012	25217000
2013	33456947
2014	48405000
2015	52844000
2016	57128000
2017	64104000
2018	67202000
2019	163872000
2020	151119000
2021	140355000
2022	147937000