Year	TDS, current US$
1976	1523000
1977	16709000
1978	28898000
1979	53705000
1980	80967000
1981	108078000
1982	161653000
1983	220460000
1984	251995000
1985	273591000
1986	364622000
1987	373038000
1988	1204705000
1989	755915000
1991	1920000
1992	27184008.7
1993	96898276.8
1994	215488723.6
1995	84455363.5
1996	190482557.5
1997	234871611.6
1998	488622052.9
1999	455778106.8
2000	532728424.3
2001	462159625.9
2002	460248659.8
2003	499819883.4
2004	609424263.8
2005	582390639.5
2006	701752197.9
2007	806479872.6
2008	956306920
2009	919458379.9
2010	911355766.6
2011	1078760754.7
2012	1253825445.8
2013	1345339489.7
2014	1283104801.9
2015	3175928929.6
2016	1126161435
2017	2411945571
2018	2643769305.9
2019	2024949552.3
2020	806259317.2
2021	873778739.4
2022	1588055816.2