Year	TDS, current US$
1970	33781000
1971	43226000
1972	39650000
1973	56214000
1974	64588000
1975	80134000
1976	108562000
1977	163079000
1978	249544367
1979	339790854.6
1980	417276729.90000004
1981	505443549.6
1982	691474892
1983	843443203.1999999
1984	1045737490.4
1985	1280077048.7000003
1986	1923030093.1
1987	2576655170.5999994
1988	3340314266
1989	3202608385.1999993
1990	3817571539.1
1991	4083847847.1
1992	4772217105.300001
1993	4688560983.299999
1994	6142161717.100001
1995	5759763418.2
1996	7123379937.499999
1997	5658916270.699999
1998	5076511329.9
1999	5806828851.900001
2000	7658337051.4
2001	7255647234.199999
2002	10691548910
2003	10042189725.099997
2004	8402935934.799999
2005	6436937929.5
2006	6724386359.7
2007	7088205115.7
2008	6960983566.599999
2009	6237693601.299999
2010	6055651437.200001
2011	7709957381.099999
2012	7851576296.400002
2013	8244548622.1
2014	7326608587.399999
2015	6698791575.999999
2016	7214663977.7
2017	7764620205.4
2018	8642307612
2019	9973020287.200003
2020	9499432260.7
2021	9074863205.899998
2022	10350185478