Year	constant 2015 US$
1973	35821196270.216156
1974	35445880631.63416
1975	33786009962.651676
1976	34054431429.66675
1977	33196279686.085133
1978	36197141303.1351
1979	38429125093.26984
1980	39175860364.034836
1981	43863183966.32651
1982	42914447394.22238
1983	43914257934.8973
1984	44918732949.96038
1985	49049472887.18965
1986	50976359940.25339
1987	52824335835.02563
1988	54181127907.84802
1989	55546574843.51187
1990	59446989701.25874
1991	58604039673.609406
1992	60515050180.98555
1993	62343886652.07355
1994	65579511000.62864
1995	68043949000.65
1996	69991035167.37665
1997	71500170023.32503
1998	74469548380.33801
1999	77781104770.18526
2000	82193771980.22723
2001	86142198887.0073
2002	89347555933.99718
2003	93064890545.03145
2004	100252203581.37424
2005	106804062846.32458
2006	115465629116.03076
2007	124093503898.54468
2008	130596169168.90366
2009	137184098073.69792
2010	145625601171.17847
2011	153838405941.27408
2012	163245979334.27432
2013	172506808926.57138
2014	179643566588.8261
2015	190332221808.999
2016	203481139430.7971
2017	212734927619.87918
2018	232172023727.3451
2019	265512161923.171
2020	276590005273.8758
2021	297059873905.07184