Year	current US$
1960	215875682.4863503
1961	265224695.5060899
1962	291054178.9164217
1963	328223435.5312894
1964	386602267.9546409
1965	426921461.5707686
1966	477740445.19109625
1967	614027719.4456111
1968	578328433.4313314
1969	706425871.4825704
1970	924821503.5699286
1971	1004829903.401932
1972	841914930.2565868
1973	574860493.7103944
1974	647676767.6767677
1975	770303030.3030303
1976	1073535353.5353535
1977	1390505050.5050504
1978	1666060606.060606
1979	1724343434.3434343
1980	2416767676.767677
1981	3067171717.171717
1982	3033744075.829384
1983	2832677165.354331
1984	3372885129.1184325
1985	3106398416.8865433
1986	2989026658.400496
1987	3323507136.6152053
1988	4236058103.104529
1989	4519807210.837392
1990	4491749637.731968
1991	5016998857.801928
1992	5384967119.465505
1993	5464338433.704349
1994	5326723952.576171
1995	6302547975.097876
1996	5682879936.684997
1997	5186649260.595496
1998	4570279202.967388
1999	4338506274.895495
2000	5337289200.289926
2001	5145671590.518723
2002	5183907112.698929
2003	6199539013.146662
2004	7178408893.520931
2005	6877333315.363155
2006	8359696340.921469
2007	8312470519.937593
2008	4516911417.905079
2009	8375238699.436803
2010	7369871917.270066
2011	7349484551.961649
2012	7667186726.675548
2013	9113324422.00023
2014	11067227737.54996
2015	13342270691.737934
2016	21245767546.724068
2017	22686795718.334797
2018	24314284567.213306
2019	19696625873.45607
2020	17653378940.67454
2021	22359353819.932667
2022	18854154298.92651
2023	17654501822.350525