Year	current US$
1975	397841236.19323885
1976	435992729.4759164
1977	556506963.5051336
1978	716786565.6678177
1979	879264670.6586827
1980	1440552238.8059702
1981	1367357740.5857742
1982	1428399260.1726263
1983	1455447163.5150166
1984	1450522632.1036892
1985	1550859117.0825336
1986	1890466101.6949153
1987	2205573447.0158343
1988	2594416060.225847
1989	2716170769.230769
1990	3423109987.1959023
1991	3791498989.8989897
1992	4385558800.521512
1993	3919519670.200236
1994	4323575238.095239
1995	6144495472.186287
1996	6309858218.318695
1997	5968794754.846066
1998	6392045248.868778
1999	6440926645.091693
2000	6181605089.538172
2001	6405154826.958105
2002	7053164423.076922
2003	8858296715.741789
2004	10648035000
2005	11349631886.58127
2006	12331043783.71597
2007	15323565562.551327
2008	18587621209.90186
2009	16591552007.624573
2010	16976053802.967926
2011	18188123898.555637
2012	16748783926.066072
2013	16061244884.135298
2014	15951656985.150995
2015	13400895295.286932
2016	13788097669.03026
2017	14897906617.55646
2018	16579882116.509096
2019	16369480195.825972
2020	15406523637.31387
2021	16982778873.76139
2022	17486224353.63909
2023	19312690331.898254