Year	constant 2015 US$
1980	29726984.715378862
1981	29155311.932390828
1982	28726557.34514973
1983	29726984.715378862
1984	29869902.9111258
1985	28869475.540896807
1986	52736814.230648085
1987	96183945.73774023
1988	77747498.48637545
1989	101329000.78463271
1990	86036753.83970226
1991	76032477.7798301
1992	79033763.95531249
1993	97613133.62981117
1994	107474484.8276723
1995	93897254.19930845
1996	81177529.98136602
1997	87037175.43792227
1998	137344392.2100728
1999	91467648.12344532
2000	69315325.91285245
2001	65456533.32694866
2002	46019657.24202856
2003	72459525.24373592
2004	83491948.218844
2005	142734548.30435583
2006	144163405.07821786
2007	165871036.83496848
2008	172575672.46616742
2009	167684585.81717804
2010	310487829.1587388
2011	182811233.00969857
2012	191686631.81657255
2013	186630677.0782914
2014	174210614.3516442
2015	208915347.14756322
2016	219247080.74318123
2017	261645657.70604986
2018	278709504.9477488
2019	334572309.2027792
2020	292283644.2994384
2021	275494577.2065592
2022	374717688.9453269