Year	TDS, current US$
1984	1983689.1
1985	3921876
1986	8111906.6
1987	11293822.1
1988	13806946.3
1989	15227381.1
1990	15767790
1991	15147800.7
1992	19719995.4
1993	21963975.1
1994	25005579.2
1995	24502816.1
1996	32338417.7
1997	32044726.8
1998	36703258
1999	28489862.5
2000	27097599.6
2001	32555513.4
2002	18322798.9
2003	21897233.6
2004	24357733.9
2005	29257835.6
2006	26328638
2007	15679043.6
2008	21998798
2009	35549042.5
2010	34625567.2
2011	47736611.6
2012	61601473.9
2013	71879352.1
2014	90125996.9
2015	79815629.4
2016	86010825.9
2017	85558539
2018	83687319.9
2019	106460445.4
2020	111323712.4
2021	157551340
2022	145720724.1