Year	TDS, current US$
1999	800067.2
2000	867725.1
2001	430339.1
2002	374890.7
2003	332890.3
2004	498713.2
2005	678530
2006	907764.8
2007	793627.8
2008	196482.9
2009	54655.6
2010	74700.8
2011	25566.5
2012	6965.3
2013	29946.8
2014	12157.1
2015	11193
2016	18070.8
2017	11093.9
2018	19824.4
2019	208634.2
2020	66867.2
2021	22793.1
2022	476418.1