Year	constant 2015 US$
1972	133429778779.17194
1973	137448243619.07108
1974	190641193314.1853
1975	249437031867.48544
1976	310054057449.4124
1977	329696206309.12134
1978	287098364446.9806
1979	206522300581.626
1980	237770632911.48468
1981	223366993171.12738
1982	215313297417.16614
1983	259026713012.55905
1984	222485452247.63312
1985	214390490514.32703
1986	198550446645.58826
1987	181846415595.95096
1988	144562404754.64636
1989	163033958067.4018
1990	181032782218.11276
1991	208848100245.74753
1992	195702623118.8573
1993	154479414507.98938
1994	130914901181.14464
1995	152758766933.09738
1996	179369930454.81387
1997	177922119107.70538
1998	183836777615.30676
1999	186684424419.1595
2000	195162335751.9998
2001	224587071541.42487
2002	257345111748.7782
2003	291233233702.46063
2004	310271497778.2417
2005	310095953908.93866
2006	328054809004.0384
2007	373732053558.3053
2008	424096592958.22125
2009	433452493263.4536
2010	479244527331.43726
2011	461702144251.5674
2012	459134944846.169
2013	452833971180.8202
2014	466222156016.81854
2015	390783021764.8049
2016	441482232661.9104
2017	460225494792.59674
2018	460614792101.32117
2019	446134358882.85297
2020	427966855758.66254
2021	453245066677.76324
2022	465372295000.2054
2023	470300024083.69965