Year	TDS, current US$
1970	692642403.1
1971	867230770
1972	1023901238.3000002
1973	1567733229.1999998
1974	1671851933.5
1975	2037690266.5
1976	2459522527.7999997
1977	3474370146.6
1978	5543970319.799999
1979	6224405290.7
1980	7215962417.900001
1981	10467744439.199999
1982	11858256100.600002
1983	12186953566.699999
1984	13179006745.800001
1985	14736470345.300001
1986	16263848147.300001
1987	18357164649.300003
1988	21726764123.7
1989	24174519880.899998
1990	26786483846.699997
1991	28950483139.600002
1992	32402829134.100002
1993	37161999377.7
1994	39462197301.399994
1995	46846200373
1996	53401652862
1997	56236870321.7
1998	55877951242.5
1999	68269388968.09999
2000	66161754072.99999
2001	71868371302.49998
2002	79670470791.40001
2003	82851852537.19998
2004	69579161969.49998
2005	76893110406.00002
2006	85395574615.59998
2007	88855176123.2
2008	85607224660.5
2009	89172397775.29999
2010	109746737840.00002
2011	120658770987.20001
2012	138916544582.3
2013	150182732673.3
2014	187637836368.39996
2015	229058250153.99997
2016	272999284870.5
2017	315923504031.3
2018	358478494056.7
2019	435319807815.39984
2020	398315815212.9001
2021	473194255078.3
2022	589938758874.7001