Year	TDS, current US$
1970	75160000
1982	0
1983	68220000
1984	204370000
1985	402420000
1986	978640000
1987	1454825247.2
1988	1179679622.7
1989	1069282169.7
1990	996216344.2
1991	717543139.3
1992	668796546.8
1993	541951098.3
1994	147860456.9
1995	58874883.3
1996	74846777.1
1997	34704990.3
1998	22082910.4
1999	2459647154.4
2000	7049716727.3
2001	143073115.4
2002	5122927857.5
2003	13212610356.5
2004	5576326157.8
2005	24904028711.1
2006	131004101
2007	19384158.7
2008	4530078.9
2009	10409899
2010	14227796.7
2011	4869508.3
2012	1326651.1
2013	5703768.8
2014	2194348.3
2015	2024533.3
2016	3390352.7
2017	2141124.2
2018	3864346.2
2019	39632203.4
2020	12608650.8
2021	10187069.8
2022	211199083.1