Year	current US$
1970	151113636.36363634
1971	231819318.1818182
1972	281399274.8697031
1973	422402085.87595695
1974	586727363.6818409
1975	530397527.6512687
1976	549212823.1871328
1977	703431890.1795143
1978	713863376.4892479
1979	783666761.2024958
1980	1004390737.0351843
1981	1007157055.4525069
1982	921971663.3607254
1983	699326323.9248394
1984	714337896.8059899
1985	720078901.0231837
1986	880451705.6651145
1987	1290738781.5043488
1988	1374496605.7562654
1989	1204808158.2278259
1990	1408226968.728875
1991	1524602576.7717638
1992	1431665522.6523523
1993	1137696617.9115782
1994	1139801785.418132
1995	1248718753.7195654
1996	1541163759.3984962
1997	1646817372.1480925
1998	2186591660.172242
1999	2115420534.6490579
2000	2216272921.5426884
2001	1908084990.854466
2002	1845801561.6118839
2003	2449582656.5331316
2004	3440285204.66095
2005	4989851877.608893
2006	6184369749.2163
2007	6371050113.183982
2008	4585023121.643609
2009	2016845357.105883
2010	1936513731.8089564
2011	2339187479.419107
2012	2357721490.2282
2013	2515830550.0805
2014	3065780651.135763
2015	3386606655.8119226
2016	4353187004.242364
2017	5383966138.732047
2018	5734658438.981711
2019	5146199157.386409
2020	4589506383.597972
2021	5877257814.565512
2022	6896221162.183302
2023	7350994343.221791