Year	TDS, current US$
1999	858580.6
2000	931186.7
2001	461812.1
2002	402308.6
2003	357236.5
2004	535186.9
2005	728154.7
2006	974154.8
2007	851670.1
2008	210852.7
2009	58652.7
2010	80164.1
2011	27436.4
2012	7474.8
2013	32137
2014	12157.1
2015	22386
2016	144566.1
2017	183049.4
2018	3252621.2
2019	6245208.5
2020	4240496.4
2021	2451677.7
2022	2887950.1