Year	TDS, current US$
1981	68070510.3
1982	158586555.2
1983	300383699.2
1984	457895718.7
1985	1178227918.3
1986	1553656934.9
1987	1989466345.2
1988	2338820336.3
1989	2580146301.2
1990	1374477629.1
1991	275505844.2
1992	450823741.6
1993	328186780.6
1994	687860082.7
1995	1140131755.6
1996	1273036903
1997	1013742074.9
1998	1378837048.2
1999	1254745529.7
2000	1281556851.5
2001	1392105441.6
2002	1411504683.2
2003	1131614181.3
2004	2461209950.8
2005	4466572664.5
2006	3740976427.1
2007	6199983600.1
2008	5649076803.2
2009	4870909559.5
2010	4216781704.2
2011	4455425537.9
2012	4670405411.1
2013	6205626905.7
2014	5341736987.5
2015	9473574467
2016	8142717662.9
2017	8738935359.7
2018	6799514625.6
2019	5749022706.2
2020	5084286056.3
2021	5947609722.4
2022	9341017597.5