Year	current US$
1965	276571428.57142854
1966	263238095.23809522
1967	273523809.5238095
1968	278476190.47619045
1969	289523809.5238095
1970	304380952.38095236
1971	362581442.1791604
1972	508297298.3736583
1973	581125058.1125058
1974	914988957.819788
1975	1212876025.1275895
1976	1382076846.8310885
1977	1560606060.6060607
1978	1835783848.4661353
1979	2115572919.4857085
1980	2567300568.041492
1981	2724765291.492171
1982	2580554506.8708134
1983	2797130679.5999217
1984	2963313865.399642
1985	2536740739.3205
1986	2398778885.9097085
1987	2277164875.4256864
1988	2090920536.6260824
1989	2415515931.913441
1990	3326818181.818182
1991	3397934782.6086955
1992	4524141455.5992365
1993	4271416359.9809513
1994	3852686065.202648
1995	4453737971.872686
1996	4899487162.62862
1997	5074291894.081606
1998	5432654943.028387
1999	5648675419.92455
2000	5561388008.751841
2001	5776690695.086512
2002	5510317338.065586
2003	6403157883.299262
2004	7266430985.325183
2005	6996430644.202822
2006	8061155876.110517
2007	9216003646.131681
2008	11449735501.265276
2009	10554812908.481606
2010	11937930068.46444
2011	12048753820.723791
2012	12346869053.68617
2013	11620168675.499706
2014	11997172603.708012
2015	9952004078.25145
2016	9082774799.083628
2017	8978538289.056284
2018	9802343676.50509
2019	8298741187.820612
2020	5391454430.765926
2021	7275376663.957742
2022	7404006570.259912
2023	6561781840.419711