Year	TDS, current US$
1970	45250000
1971	25328000
1972	16285000
1973	73619000
1974	63102000
1975	11340000
1976	46690000
1977	147820000
1978	114410000
1979	80390000
1980	101370000
1981	149290000
1982	159340000
1983	335540000
1984	482460000
1985	537190000
1986	617730000
1987	663778705.5
1988	749900263.6
1989	683578917
1990	419014635.4
1991	196103276.8
1992	122461955.2
1993	932790.2
1994	121725.3
1996	1164331.6
1997	24769.6
1998	154672.6
1999	3878282.3
2000	105677694.2
2001	9067760.5
2002	13249520
2003	14240675.5
2004	260497721.7
2005	240909947.6
2006	248875290.5
2007	3062423.5
2008	715688.5
2009	8180262.4
2010	23310559.1
2011	31038771.5
2012	292174761.9
2013	880928279.8
2014	762666738
2015	163573059.5
2016	16818318.1
2017	330043.8
2018	596148.7
2019	6109803.5
2020	1943328.7
2021	810577.9
2022	16817826.2