Year	TDS, current US$
1972	11000
1973	8000
1974	43000
1975	25000
1976	40000
1977	36000
1978	74290.7
1979	175443.7
1980	383813.1
1981	1107010.3
1982	1168214.4
1983	4438996.4
1984	2044095.5
1985	591965.7
1986	5723926.6
1987	8552678.2
1988	8990328.2
1989	8081727.4
1990	7673010
1991	8591407.1
1992	8430065.8
1993	8597332.7
1994	9048423.8
1995	10184585.3
1996	9725572.2
1997	10013653.3
1998	11642246.3
1999	10280074.8
2000	11560799.3
2001	6516035.6
2002	7196395.4
2003	9654416.4
2004	13959786.8
2005	15254067.1
2006	16027690.8
2007	19579045.6
2008	9263712.9
2009	12044738.9
2010	11447187.8
2011	13909980.6
2012	14852883.3
2013	14944499.2
2014	21041090.8
2015	20404935.7
2016	20879286.4
2017	20759819.6
2018	23861565.2
2019	24200096.8
2020	21852809.3
2021	25971189.9
2022	22795986.5