Year	TDS, current US$
1970	3249000
1971	3249000
1972	2678000
1973	4224000
1974	2812000
1975	2858000
1976	2415000
1977	525000
1978	972000
1979	1815000
1980	2645000
1981	3268000
1982	4000000
1983	4964972.4
1984	7616127.5
1985	9583936.4
1986	14109785.4
1987	16117605.4
1988	19179615.6
1989	21662190.8
1990	24944995
1991	26951412.7
1992	30804620.3
1993	26033534.7
1994	35012949.2
1995	37321251.5
1996	38091436.5
1997	25837016
1998	3002825
1999	4665817.5
2000	2213065.9
2001	2193878
2002	2883748.7
2003	3188631.3
2004	3664498
2005	4097234.8
2006	4351986.2
2007	3801576.6
2008	3549659.4
2009	4011613.2
2010	3955350.9
2011	4685427.8
2012	947009340.4
2013	70305245.2
2014	64686447.4
2015	58723566.9
2016	60094990.2
2017	52154326.2
2018	56053861.2
2019	52225484
2020	54824644.1
2021	101686945.1
2022	110184744.6