Year	TDS, current US$
1970	283500000
1971	144400144.1
1972	262737948
1973	362386731
1974	294133966.1
1975	256271240.5
1976	182229875.6
1977	462726813.8
1978	1074952964.1999998
1979	549474805.9
1980	824745903.2
1981	792666905.5
1982	810826225.5
1983	1761569662.9
1984	2971626111.5999994
1985	3005398597.299999
1986	4697297110.4
1987	5344359754.299999
1988	5297808475.099999
1989	5414914624.1
1990	5857141273.499999
1991	5065380224.800001
1992	3963724349.5
1993	3997052029.3999996
1994	2797342268.7
1995	3605520675.3
1996	5130055158.800001
1997	6788272710.000001
1998	5874678288.200001
1999	16049316882.899996
2000	20577298481.400005
2001	12271361429.700005
2002	20454097591.100002
2003	26592039847.7
2004	21526546405.799995
2005	44263455099.9
2006	28299626814.7
2007	7063566123.900002
2008	2857122967.2999997
2009	1206011679.2
2010	2815728048.1
2011	3420408687.9
2012	3531448358.0999994
2013	4927351347.7
2014	3766808642.299999
2015	1794075125.1
2016	552264691.4
2017	552687386.9
2018	975350213.3
2019	2997010598.4
2020	3393308209.1
2021	7110519148.400001
2022	21655066337.800003