Year	TDS, current US$
1970	7680000
1971	8995000
1972	9325000
1973	10886000
1974	13902000
1975	15268000
1976	18934000
1977	24258000
1978	27783000
1979	33320000
1980	43029000
1981	56707000
1982	69868000
1983	78499000
1984	87784000
1985	115436000
1986	149086474.8
1987	210663487.8
1988	305336619.9
1989	315344572.6
1990	311753417.6
1991	328522889
1992	312301764.5
1993	357298238
1994	389210623.4
1995	413448087.8
1996	440959901.2
1997	552276535.6
1998	445158680.6
1999	501998207.4
2000	591130436.4
2001	580106864.9
2002	592500967.1
2003	578107654.1
2004	593565629.2
2005	580973716.9
2006	702514337.8
2007	924991609.4
2008	981721298.2
2009	501089331.3
2010	580705291.8
2011	799306732.6
2012	793438117.3
2013	658092828.1
2014	633814296.7
2015	636020059.3
2016	674096267.8
2017	719035026.8
2018	988971965.6
2019	1197559351.5
2020	1185629102.9
2021	1099769886.2
2022	1238485929