Year	current US$
1970	2301.320102209177
1971	2728.1803578214463
1972	3606.5299137877846
1973	9582.792315798175
1974	23684.08836079339
1975	27090.340063628762
1976	31282.77154434759
1977	35186.232037988026
1978	29526.63797678322
1979	34372.382493511024
1980	42995.163986647814
1981	44841.22973978172
1982	39921.63297982343
1983	34586.531809977576
1984	31955.181246873322
1985	29432.83120668438
1986	23111.378381515766
1987	23088.204169283497
1988	21545.455584053267
1989	23141.01477471198
1990	26682.84980946118
1991	25668.493321466176
1992	25630.080973092732
1993	25019.372357889035
1994	25463.496288506263
1995	27010.67818570383
1996	28596.506828797497
1997	28709.246920678062
1998	25905.843383617244
1999	27261.90657331581
2000	31855.500604717483
2001	29909.009434843505
2002	30221.966999513555
2003	32607.372934828723
2004	37017.73636546898
2005	42190.55437946331
2006	45339.58511658089
2007	43918.380169426484
2008	45140.76907724382
2009	31722.58876379922
2010	35392.26096635998
2011	42078.61381164821
2012	44386.78607983742
2013	45729.60767574296
2014	46865.96459768656
2015	41525.13890435866
2016	41054.53956989409
2017	43063.96747855962
2018	46722.26871931259
2019	45376.17083904472
2020	37629.17416806525
2021	44332.3400499381
2022	53707.9800813801
2023	52976.80837824046