Year	TDS, current US$
1970	2314000
1971	4261000
1972	5470000
1973	7634000
1974	9020000
1975	9504000
1976	9321000
1977	9468000
1978	10447000
1979	11151000
1980	11890000
1981	16440000
1982	19337000
1983	23125138.3
1984	30946050.5
1985	36394307.5
1986	55574502.8
1987	57230592.5
1988	71690028.1
1989	77136930.9
1990	74920473.6
1991	118182573.9
1992	106021649
1993	105923228
1994	120539957.1
1995	133242475.8
1996	123489222.1
1997	116584644.5
1998	107227623.4
1999	114687973.8
2000	124104630.4
2001	140258960.9
2002	138480592.3
2003	148114011.8
2004	182877991.4
2005	193073216.4
2006	203244323.5
2007	313863963.4
2008	303075842.7
2009	275494753.7
2010	243622189.2
2011	261653098.3
2012	285263459.9
2013	465236417.6
2014	643685357.5
2015	305352516.4
2016	330259657.3
2017	359659735.9
2018	400431818.9
2019	451349964.9
2020	421206643.8
2021	365525510.1
2022	451045105.1