Year	TDS, current US$
1970	7862000
1971	8264000
1972	8906000
1973	9616000
1974	13330000
1975	15570000
1976	18857000
1977	25845205.7
1978	32798427.1
1979	42409001.4
1980	51397835
1981	47627484.9
1982	48090743.9
1983	59958235
1984	58867221.3
1985	53523931.2
1986	83573794.7
1987	64740029.7
1988	42476162.9
1989	25955302.3
1990	70086504.9
1991	410178733.6
1992	163726150.5
1993	140924845
1994	160348966.2
1995	185192405.7
1996	134098885.9
1997	115566844.3
1998	86696940.3
1999	71859046.6
2000	83945038.7
2001	40481805.8
2002	28466596.4
2003	35518739.2
2004	58517866.6
2005	46089486.9
2006	41993544.4
2007	37165743.3
2008	37729479.2
2009	35848488.9
2010	33259020.2
2011	34846447.9
2012	34332882
2013	25644943.1
2014	30314740.8
2015	28766992
2016	31154836.2
2017	42424443.1
2018	48928011.7
2019	55224537.1
2020	66125341.9
2021	148469416.7
2022	122005756.3