Year	current US$
1970	16576923.37
1971	24760213.85
1972	36248191.83
1973	52594650.27
1974	80947891.24
1975	87247398.38
1976	105288040.2
1977	118988021.9
1978	154029663.1
1979	198398651.1
1980	244725067.1
1981	223906967.2
1982	220660125.7
1983	214508590.7
1984	197660034.2
1985	201390884.4
1986	303058471.7
1987	400337341.3
1988	448963897.7
1989	469524231
1990	634832336.4
1991	772377197.3
1992	815280883.8
1993	768971069.3
1994	844941223.1
1995	1012422485
1996	984293640.1
1997	915090698.2
1998	1416633179
1999	1809788330
2000	1804517334
2001	1774000488
2002	1985329834
2003	2496145508
2004	2520989014
2005	2313507128.00776
2006	2517171820.75859
2007	2915622151.61598
2008	3189808742.62739
2009	3101681748.75588
2010	2983488445.59884
2011	3250804925.70344
2012	3028188698.98571
2013	3261505683.9693
2014	3239901778.63492
2015	2863606817.4052
2016	2887576591.28188
2017	2956934245.82416
2018	3022591419.43224
2019	2996058679.89715
2020	3026771045.59774
2021	3201021423.80953
2022	2999848702.27274
2023	3305581622.76982