Year	TDS, current US$
1996	460215.9
1997	948126
1998	1685117.7
1999	11358136.8
2000	16565938.7
2001	15653258.5
2002	37061430
2003	17585307.7
2004	15223606.1
2005	18195108.3
2006	5129025.5
2007	4522644.9
2008	32250707.3
2009	15548033.9
2010	409092.7
2011	138446.6
2012	37718.4
2013	162165.7
2014	4028543.9
2015	11015308.2
2016	20054374.3
2017	25398114.9
2018	29677159
2019	26370807.2
2020	20351318.2
2021	9479060.6
2022	5647427.9