Year	TDS, current US$
1970	6239000
1971	6149000
1972	7693000
1973	9440000
1974	10424000
1975	11902000
1976	14120000
1977	17400000
1978	27657000
1979	33822000
1980	40020000
1981	41425000
1982	54579000
1983	65269000
1984	67223000
1985	70296000
1986	91660694.6
1987	127431027.7
1988	128291392.4
1989	119765788.1
1990	68734091
1991	177274075.7
1992	260499854.6
1993	149884944.1
1994	152199796.6
1995	151218445
1996	145138733.2
1997	134640043.9
1998	137867586.9
1999	158219164.2
2000	167089552.5
2001	197810177.2
2002	200529761.9
2003	221869171.2
2004	266873485.3
2005	232555933.5
2006	276757277.5
2007	301716181.8
2008	384217765
2009	394781635.6
2010	415747250.6
2011	431693001.1
2012	439267894.1
2013	477167448.8
2014	497410016.5
2015	541701228.1
2016	554011634.1
2017	639454653
2018	510937307.6
2019	595690675.6
2020	573874713.1
2021	521882034.3
2022	507860503.1