Year	TDS, current US$
1970	6013000
1971	6544000
1972	7059800
1973	8851200
1974	10346800
1975	10286800
1976	11273000
1977	14391000
1978	17293000
1979	20839000
1980	21359000
1981	27711000
1982	34518000
1983	37003000
1984	45037000
1985	59482000
1986	73469000
1987	79873000
1988	72697000
1989	67400000
1990	115672000
1991	98222000
1992	111239000
1993	118509000
1994	171456000
1995	149991310
1996	156776238.8
1997	172176484.7
1998	260606011.4
1999	198167758.2
2000	197597464.7
2001	229757642.8
2002	219854403.5
2003	262831887.6
2004	318829534.9
2005	287555723.7
2006	399603053.6
2007	366345907.4
2008	427626177.3
2009	633883793.6
2010	445103996
2011	425857336.8
2012	522007884.4
2013	474451180
2014	494416193.5
2015	472723798.5
2016	542235398.2
2017	507706310.8
2018	538155742.6
2019	573228050.1
2020	518592122.6
2021	507387656.4
2022	563372357.7