Year	TDS, current US$
1970	2399151.4
1971	2191304.4
1972	2359993.9
1973	2627314.7
1974	3098106.6
1975	8121331.9
1976	9174372.7
1977	9143065.9
1978	44008904.1
1979	74725189.6
1980	141138529
1981	173079440.1
1982	245125004.8
1983	143897265.3
1984	94141438
1985	107449744.3
1986	128803511.9
1987	161431793.6
1988	169006896.9
1989	122262002.6
1990	98701966.2
1991	107175758.7
1992	53162095.2
1993	89739673
1994	66146348
1995	55814585
1996	56414581.1
1997	64266286.5
1998	62020088.4
1999	31942388.1
2000	26562840.4
2001	28876615.4
2002	26438484
2003	37992773.3
2004	40202051
2005	40492783.5
2006	169673007.5
2007	30596604.3
2008	28972256.7
2009	37497795.5
2010	26451201.7
2011	32715238.5
2012	41497397.4
2013	73848246.2
2014	114115575.3
2015	87928797.2
2016	111473748.2
2017	133140939.5
2018	124823678.4
2019	141358111.4
2020	195782769.9
2021	222187770.4
2022	279836251.7