Year	TDS, current US$
1970	643245692.5999999
1971	717016737.4999999
1972	803017517.7999997
1973	1385654454
1974	1263577794.5
1975	1614152952.8000004
1976	1822333665.4000003
1977	2112350516.7
1978	2584542569.1999993
1979	3598177604.9999995
1980	6617830680.099999
1981	7569339382.600001
1982	7673970634.800001
1983	8080702605.799999
1984	9843067103.6
1985	10803643010.3
1986	9512396666.899996
1987	8594570571.6
1988	9805911968.799997
1989	9371346788.499998
1990	10841569171.6
1991	10137744973.000002
1992	8722098946.099998
1993	7277266135.999999
1994	11752471998.800001
1995	14766927154.000004
1996	14944002990.3
1997	15630471241.2
1998	14280964844.800003
1999	13814192245.300001
2000	13782055827
2001	14101390342.2
2002	13702929822.899998
2003	13592534823.5
2004	13573107636.3
2005	22866578500.600006
2006	25543233538.600006
2007	19131701898.199997
2008	20170059116.800003
2009	18991009325.5
2010	18926412981.1
2011	20305793787.899998
2012	29334316528.699997
2013	33868048915.399994
2014	41437428626.2
2015	55168845670.899994
2016	49639075610.6
2017	52465881729.50001
2018	75215089256.40001
2019	79603900001.8
2020	71305198602.9
2021	82931098323.6
2022	83879152605.09999