Year	TDS, current US$
1970	307930334.3
1971	343326883.5
1972	371560904.8
1973	563119914.9
1974	500981313.7
1975	456930745.1
1976	571346427.4
1977	663424826.9
1978	1381216420.2
1979	1583735278.7
1980	2182487028.9
1981	2970514482.2
1982	3513256075.4
1983	3027867254.5
1984	2703265676.1
1985	2534193927
1986	2961224176.6
1987	3376184699.8
1988	3404952172
1989	3244351238.6
1990	3589848557.2
1991	3398235790
1992	4304524722.1
1993	4919756499.8
1994	4649000746.5
1995	5363487118.7
1996	5370854315.5
1997	4554356840.8
1998	4754305622.5
1999	5901584571.7
2000	7066128749.1
2001	9366382305.5
2002	10204288223.9
2003	10200560342.1
2004	11481732142.6
2005	9527655206.4
2006	13217610260.9
2007	8298085161
2008	10394839711.7
2009	8989520844.4
2010	11460755996.3
2011	9511028134
2012	5708256473.4
2013	5880107762.9
2014	7537558408.3
2015	10577378057.4
2016	10994132188.6
2017	11208123501.1
2018	8811185518
2019	10619840093.8
2020	9290532908.7
2021	12153999211.8
2022	9015698455.2