Year	TDS, current US$
1970	699911839.1999999
1971	738820381.2999998
1972	865119245.9999999
1973	994733074.2999998
1974	1120130648.6
1975	1283843901.7
1976	1562391734.2000003
1977	1962573812.7999997
1978	2514253901.9999995
1979	2890623005.8000007
1980	3647029008.6000004
1981	3921020816.7999997
1982	4694393911.000001
1983	6567830734.9
1984	6657466430.299997
1985	7919300506.000001
1986	11069100793.800003
1987	14164464723.2
1988	16842018791.900003
1989	16450570615.8
1990	19809426238.799995
1991	22885826049.800003
1992	23584475731.899994
1993	25179209290.3
1994	28014422260.1
1995	28438401303.799995
1996	28932316385.30001
1997	27599876966.699986
1998	25910729086.20001
1999	30189625296.500004
2000	34759275800.7
2001	30791136594.40001
2002	40378767622.50001
2003	45957271712.3
2004	37741869803.6
2005	33811888786.30001
2006	44394943510.29999
2007	34763687446.5
2008	35647461326.600006
2009	32952819618.000004
2010	31384172305.199997
2011	40739403893.1
2012	36134083736.19999
2013	43837058126.7
2014	38203541115.899994
2015	37292060857.7
2016	41205676502.999985
2017	47906652696.2
2018	52575677382.4
2019	56316988161.600006
2020	53901568419.5
2021	56591742175.600006
2022	59010230087.39999