Year	constant 2015 US$
1975	327488041.28415906
1976	355204123.43624234
1977	355568752.0866274
1978	343898769.8895917
1979	356298152.8785294
1980	376355885.4546082
1981	373803197.91964906
1982	375261856.0123211
1983	371250223.4024263
1984	405895397.8408805
1985	404801368.3985935
1986	402613309.5140194
1987	416471350.5956292
1988	462057106.4392172
1989	477373949.10463107
1990	481020809.57300895
1991	408448369.7856196
1992	495608235.2766237
1993	514207180.48994434
1994	458045631.2630928
1995	595943114.6070664
1996	617501863.7020221
1997	519559282.7757214
1998	591017532.3328276
1999	621024273.0923494
2000	605628348.3938752
2001	646577610.3893613
2002	674609886.4479502
2003	619260284.3240035
2004	637609553.8543296
2005	596640246.5319304
2006	526186490.5790212
2007	492710794.63427365
2008	452472028.11492693
2009	414209953.5550588
2010	445945046.9461922
2011	467869066.44267404
2012	446584270.148863
2013	424660250.6523812
2014	361369358.18305856
2015	371902063.8465789
2016	433307581.95680434
2017	403435590.33930904
2018	394004264.02673197
2019	418330381.8649577
2020	410550567.7641591
2021	410085070.72806776
2022	413352459.01489043
2023	416963958.74705327