Year	TDS, current US$
1993	963510.8
1994	4987873.8
1995	10116939.5
1996	17653705.9
1997	30988171.2
1998	74246934.6
1999	79173043.9
2000	39497300.3
2001	24067830
2002	24364653.2
2003	26971806
2004	28032624.2
2005	29448883.9
2006	33749589.4
2007	30614494.4
2008	28215302.8
2009	16250308.6
2010	9465608.9
2011	7604624.6
2012	18205923.6
2013	24202907.2
2014	31845404.4
2015	42912551.5
2016	75122932.8
2017	90795313.9
2018	92058949.7
2019	86554167.7
2020	77990864.9
2021	53795877
2022	41732083.4