Year	current US$
1973	104.88308976052129
1974	158.90897921098846
1975	239.24700179472262
1976	121.18971099439057
1977	110.76760321408305
1978	150.277959912437
1979	174.13488842050776
1980	198.6543518197233
1981	220.30521076530167
1982	195.95917936247906
1983	183.70163228673476
1984	192.18057055065046
1985	218.36968119406583
1986	208.71416966202372
1987	228.7085120267004
1988	244.1691150064428
1989	258.83458257634203
1990	277.3646086699614
1991	266.9952054760059
1992	268.8361867779697
1993	276.96305748947947
1994	277.7452209141035
1995	306.0197772876315
1996	366.3071510957268
1997	375.1968718249524
1998	381.1798919011244
1999	384.20008844828266
2000	392.89765998592793
2001	388.52983856387664
2002	390.1791648034813
2003	422.0109221439788
2004	450.7535714881847
2005	473.6404169715524
2006	484.90923777847973
2007	537.441578718239
2008	622.1783317265051
2009	691.2005162898164
2010	768.8680503888713
2011	845.2144903131499
2012	870.414581415607
2013	964.944097362783
2014	1082.6609889077674
2015	1205.9318368434328
2016	1590.937290639394
2017	1716.2543919320067
2018	1868.0981250222762
2019	2178.80295519644
2020	2290.392475298202
2021	2541.7117464141197