Year	TDS, current US$
1970	710793215.2
1971	875778508.1
1972	1232175297.7
1973	1362742984.1
1974	1548245479.8
1975	1839269805.6
1976	2083507388.6999998
1977	2758816601.2
1978	3451077190.7
1979	4656023539.4
1980	5345860273.8
1981	6195766783.700001
1982	7205432536.6
1983	7088523288.799999
1984	8176248790.599999
1985	9147304961.3
1986	10041163312.400002
1987	11706520583.7
1988	13612308495.1
1989	13480573233.9
1990	13575200831.4
1991	12401203249.3
1992	12817637406.2
1993	11492285027.9
1994	15430086209.5
1995	20912799108.800003
1996	22055016659.700005
1997	23373771989.2
1998	31981473867.800003
1999	38418981892.1
2000	43842075386.5
2001	49297594537
2002	53469994204.8
2003	63989766674.19999
2004	72716340168.9
2005	110413120523.10002
2006	123293306466.80002
2007	141057051073.2
2008	205543617840.50003
2009	219453613056.1
2010	198824286356.00003
2011	185264848485.6
2012	185894304793.8
2013	215897609429
2014	233143353834.90005
2015	258152879469.3
2016	236619230963.69998
2017	242642736997.5
2018	277062571409
2019	263589893279.4
2020	276521747482.5
2021	255093239939.39996
2022	270784537486.7