Year	current US$
1977	10192115677.542225
1978	11529589217.923298
1979	14559609052.581562
1980	16177894795.292557
1981	17203790736.05916
1982	15903860095.279001
1983	15068396031.08258
1984	16242006299.627632
1985	17094153845.237627
1986	17670801202.96002
1987	19735318863.184216
1988	22201776868.850166
1989	25983237561.53851
1990	29582402584.929935
1991	31241324734.44973
1992	35264499043.87905
1993	38537092287.24113
1994	43185687604.893005
1995	44769635181.99495
1996	47889658972.17288
1997	53797655197.22058
1998	48867518386.635124
1999	50455789297.94269
2000	55074249865.74259
2001	53964867889.48072
2002	55942791202.594055
2003	60567634749.98055
2004	68377167613.38711
2005	79358512271.7295
2006	88692456161.37444
2007	104119808694.06299
2008	119430693212.6811
2009	108319001824.62466
2010	121128521467.15105
2011	138179361622.31113
2012	147204912681.5781
2013	153325610474.74695
2014	161680331787.82178
2015	158833617143.22986
2016	162154151139.89792
2017	174251086265.86136
2018	181038359857.9609
2019	185837428956.92908
2020	119780840925.41467
2021	151986528875.13177
2022	208598408210.08743
2023	233152639984.87494