Year	TDS, current US$
1970	4301000
1971	3868000
1972	4354000
1973	4864000
1974	6172000
1975	7185000
1976	8425000
1977	10819000
1978	11652000
1979	11761000
1980	9945000
1981	9623000
1982	11937115.4
1983	13169196.3
1984	17042637.4
1985	20655930.5
1986	26791223.9
1987	29794385.8
1988	35230196.4
1989	33821474.3
1990	39393536.5
1991	43198374.2
1992	48648968
1993	51975348.8
1994	52140413.5
1995	54221963.4
1996	57271300.9
1997	64446387.6
1998	70174086.7
1999	74578801.5
2000	81577074.6
2001	89627376
2002	97752151.7
2003	106185182.5
2004	119958634
2005	129680905
2006	157137240.6
2007	170911222.1
2008	211185574.7
2009	220112787.4
2010	228152410
2011	274676171.1
2012	283355268.7
2013	301557234.7
2014	323378593.8
2015	319417387.9
2016	345891211.3
2017	383910794.5
2018	467899562.1
2019	536537768.4
2020	570107856.6
2021	613991227.6
2022	680849900.4