Year	TDS, current US$
1989	265880178.7
1990	325934344.9
1991	388320412.6
1992	245467718.4
1993	154548945.3
1994	259132717.8
1995	467577491.6
1996	996248887.7
1997	1010884498.9
1998	1532043553.4
1999	1442655895.2
2000	1720893709.4
2001	2239066883.9
2002	1450100926.4
2003	1488737668.4
2004	1885180263.9
2005	2614479250.7
2006	4429036868.6
2007	4495341012.8
2008	1634736351.4
2009	4031638044.5
2010	2961607175.2
2011	3921535532.4
2012	6055007325.4
2013	5822256621.8
2014	8258255915.9
2015	8576618472.1
2016	10905076379.3
2017	9113189009.4
2018	11938457035.3
2019	10731712298.5
2020	7811427882.2
2021	9923860131.5
2022	15321430534.5