Year	TDS, current US$
1970	11341161.5
1971	15401909.8
1972	18556566.6
1973	29962364.2
1974	31600300.9
1975	44939088.3
1976	48143233.8
1977	67688713.7
1978	126047909.8
1979	177905226.7
1980	279585184.6
1981	303571227.4
1982	387174193.6
1983	349544984.4
1984	416223369
1985	653809930.8
1986	674044637
1987	650278866.3
1988	674330034.8
1989	405600510.9
1990	516351058.4
1991	420216046.3
1992	393533017.7
1993	470595107.7
1994	384460143.6
1995	431192277.9
1996	509201210.7
1997	509600351
1998	520923602.8
1999	549536592.3
2000	559663725.8
2001	342613542.4
2002	350007615.8
2003	436590633
2004	613689429.2
2005	818876650
2006	749188069.1
2007	486125072.4
2008	437898436
2009	402293277.9
2010	203133827.3
2011	331808073.1
2012	237979382.6
2013	272988156.8
2014	530678084.1
2015	508961959.1
2016	863896682.1
2017	720802187.8
2018	1056462168.7
2019	1137311444.8
2020	1310081406.2
2021	1938960598.3
2022	1819276093.1