Year	TDS, current US$
1977	0
1978	500957
1979	0
1980	0
1989	0
1990	5430.6
1991	5474.2
1992	7043.1
1993	6982
1994	120293.3
1995	247309.7
1996	236641
1997	222926.6
1998	217084.4
1999	143483.2
2000	36810.8
2001	30332.7
2002	31637.9
2003	27603.9
2004	27808.5
2005	181970.9
2006	616225.2
2007	803546.7
2008	25219
2009	47188.1
2010	34979.9
2011	11971.9
2012	3261.6
2013	617347.1
2014	1091095.6
2015	989181.1
2016	802063.8
2017	563015.9
2018	556499.8
2019	558200
2020	530758.6
2021	602591.3
2022	1005028