Year	TDS, current US$
1970	2900000
1971	3696000
1972	4612000
1973	6278000
1974	7352000
1975	9783000
1976	13346000
1977	16113000
1978	20751000
1979	26436000
1980	29371000
1981	64036000
1982	40223000
1983	50921000
1984	66105164.4
1985	80248945.7
1986	124340631.9
1987	127376459.7
1988	7561000
1989	1013097.5
1990	128197326.9
1991	158776218.7
1992	534466196.7
1993	140342976.6
1994	136725280.5
1995	123727615
1996	110650739.8
1997	112980767.7
1998	111918402.8
1999	118148403.1
2000	126011710.1
2001	129454956.3
2002	131101250.5
2003	168368847.6
2004	178236737.4
2005	180727632.2
2006	190939895
2007	204822844.8
2008	209039786.1
2009	201277638.9
2010	216287401.1
2011	226680740.5
2012	228558571.9
2013	244204514.1
2014	253387808.5
2015	332950447.7
2016	434155702.4
2017	514172000
2018	518582000
2019	610209000
2020	586183000
2021	596609867.1
2022	654225677.7