Year	TDS, current US$
1970	4590329628.4
1971	4761308909.800001
1972	5492940498.8
1973	7263081920.699999
1974	9461034639.5
1975	10893375961.599998
1976	12276806752.9
1977	15486615352.700003
1978	23494031868.199993
1979	30455505167.8
1980	36398660185.00001
1981	45203923290
1982	48113025206.299995
1983	41635841533.4
1984	43758243108.8
1985	40205756246.399994
1986	39353291862.4
1987	37611838082.50001
1988	45549690988.299995
1989	42096920608.7
1990	34199106121.19999
1991	37031719399.50001
1992	44267775735.59999
1993	52027540736.50001
1994	53339046936.20001
1995	68133928829.00001
1996	92711184504.59998
1997	111085517370.99998
1998	112786012633.2
1999	144422470081.3
2000	158084619968.1
2001	131291339242.50002
2002	113149676437.19998
2003	124234587588
2004	127229237846.50002
2005	136570987015.59998
2006	161087521410
2007	132581975769.90002
2008	132007897082.79999
2009	122549999105.49998
2010	120455437930.19998
2011	144592637433.59998
2012	168738135016.4
2013	174891406766.2
2014	170351465836.5
2015	206985917015.80002
2016	269525729991.10007
2017	263945383437.4
2018	257949945542.90002
2019	323617304778.2001
2020	294319727399.7999
2021	326453054947.1
2022	273761208715.80002