Year	TDS, current US$
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	21210401.1
1982	33638294.1
1983	502399936.4
1984	1587114.1
1985	1573054.4
1986	38144798.7
1987	130745421.8
1988	134319744.1
1989	146457938.7
1990	555289358.9
1991	475219907.7
1999	12545400.2
2000	13555572.7
2001	6722743.2
2002	6148945.8
2003	5200402.7
2004	7790880.4
2005	10255069.4
2006	14499046.2
2007	12797749.5
2008	2990834.7
2009	25202556.8
2010	34445757.3
2011	11789169
2012	3211846.7
2013	13808929
2014	5311113.2
2015	4899734.4
2016	8208295.6
2017	5183628.4
2018	9354294.9
2019	95949614.1
2020	30526280.6
2021	27378729.4
2022	567669550.5