Year	TDS, current US$
1970	1746726.1
1971	3681838
1972	2980974
1973	2314021.5
1974	6234698.3
1975	6089263.8
1976	4300511.7
1977	3887225.5
1978	5184996.1
1979	6523789.4
1980	20185298
1981	22612803.2
1982	25060332.6
1983	32956141.1
1984	47382237.9
1985	49150906.8
1986	61897663.9
1987	40798951
1988	28301884.3
1989	25903058.7
1990	37098970.1
1991	30256243.7
1992	27534416.4
1993	31599973.3
1994	39640893.5
1995	48077771.9
1996	43896996.3
1997	52000182.1
1998	58980813.4
1999	69763785.9
2000	76105918.9
2001	47795961.9
2002	57223623.6
2003	50367552.7
2004	41076684
2005	48441194.6
2006	42023701.7
2007	36772435.2
2008	30136093.5
2009	47678936.6
2010	43826230.2
2011	50212087
2012	58958362.8
2013	84040920.5
2014	79195416.1
2015	78183407.9
2016	98641581.9
2017	104064425.9
2018	231423504.6
2019	515280288.8
2020	240667548.7
2021	747318125.3
2022	478972801.6