Year	current US$
1962	1221.3059783819522
1963	1316.875278053253
1964	1441.1722598851786
1965	1583.3928282352242
1966	1715.3284172052145
1967	1820.006642537366
1968	1908.0590590448437
1969	2058.402211558543
1970	1354.0982966754648
1971	1492.3010155854486
1972	1736.5461559033704
1973	2200.7748439301463
1974	2685.6190430097595
1975	3092.974831412421
1976	3268.894625241306
1977	3489.430124942996
1978	3946.026531469643
1979	4877.595131940098
1980	5844.661199580796
1981	5872.518810898751
1982	5377.814403496455
1983	4813.1296263202485
1984	4641.5483515779515
1985	4624.912776406341
1986	5284.69012959558
1987	6672.8411482284755
1988	8548.245149756078
1989	9128.877467638264
1990	9799.170093597291
1991	10392.94614485103
1992	11462.046932586823
1993	11282.805666395428
1994	11469.597551884122
1995	11968.636302625131
1996	12694.133435080725
1997	12957.341042795419
1998	12567.11659348487
1999	12433.674134568695
2000	12530.031733094038
2001	12125.892727219005
2002	12050.897951202644
2003	13629.136149503383
2004	16584.203413122905
2005	19213.386949365573
2006	20794.631635147445
2007	22531.64877093914
2008	24542.92442232618
2009	24313.030311594885
2010	24544.015166356836
2011	25006.806009531098
2012	25316.632748384676
2013	26009.144723738602
2014	26055.975243697594
2015	24674.42516361807
2016	23355.47153222587
2017	22877.326826579116
2018	24428.547978709874
2019	25345.497572059317
2020	24015.462136269194
2021	26743.824883576734
2022	28534.4922741464
2023	29061.17309126842