Year	current US$
1965	278.35244407632695
1966	290.0331743529155
1967	303.71733957402006
1968	339.087517742325
1969	367.7894359272428
1970	402.6781161815656
1971	451.5507332267343
1972	538.2269709890703
1973	719.0091870112797
1974	1286.158377918597
1975	1362.83309395605
1976	1642.1290628931745
1977	1844.5915009655253
1978	1895.2129442669584
1979	2411.5167593756732
1980	3011.781073354857
1981	2977.946778574656
1982	2871.8904473932116
1983	2825.6343075259074
1984	2755.289981365054
1985	2719.905294914977
1986	2667.516023087051
1987	2401.106741602287
1988	2310.5542179021836
1989	2312.978332801601
1990	2908.2413906030833
1991	2085.368626831808
1992	2218.2892048205267
1993	2205.003141978423
1994	2285.60151941858
1995	2468.358703403826
1996	2688.795503886574
1997	2760.0654174885585
1998	2644.03146819218
1999	2817.332826647611
2000	3091.7133268718712
2001	3013.454746580636
2002	2932.633344482977
2003	3205.2625229853734
2004	3706.4759130087687
2005	4350.510776180752
2006	4993.873468775418
2007	5763.882095030688
2008	7032.085696703554
2009	6163.519632578054
2010	7086.154551656779
2011	8365.338556983499
2012	8838.39907272597
2013	8518.95410497194
2014	8403.789855596835
2015	7266.659229289896
2016	7204.573743929837
2017	7380.4056994215225
2018	7607.522628596221
2019	7501.968964194899
2020	6665.2171774033695
2021	7775.55195119201
2022	9116.772782730943
2023	8561.88648477206