Year	current US$
1970	175.13847388248777
1971	187.36457740526907
1972	204.9196143669778
1973	257.0401703146025
1974	304.60345590914494
1975	321.43091224692233
1976	338.963860401651
1977	375.78614969398706
1978	395.5316226984456
1979	447.0787319725894
1980	511.4324887664254
1981	554.94497874119
1982	540.2125256027617
1983	520.1036026378447
1984	522.6336432015647
1985	532.9959573770154
1986	552.2067985720798
1987	545.6441901371525
1988	585.8645202196352
1989	616.3366954774509
1990	703.061815383686
1991	727.0785484629797
1992	787.3177856877854
1993	850.862067096976
1994	945.756087244405
1995	1064.5144007620893
1996	1163.513291957223
1997	1222.1113294019317
1998	1179.0026810110721
1999	1128.8865295665746
2000	1202.2271692944273
2001	1202.8477143628575
2002	1209.7800369859335
2003	1337.9991722508069
2004	1562.4557048456222
2005	1831.0600158989103
2006	2149.7948319706893
2007	2660.1763778401664
2008	3106.52901853363
2009	3029.6369130597964
2010	3596.34943779021
2011	4124.639791054566
2012	4367.664120075993
2013	4543.125731035752
2014	4664.764278153683
2015	4360.163349715451
2016	4351.529905378421
2017	4764.141296899962
2018	4935.202367971739
2019	4999.638446276244
2020	4741.850598941442
2021	5467.420733477687