Year	current US$
1980	342.61860428035476
1981	359.2559872142475
1982	349.2017943082188
1983	345.59473017083604
1984	347.05187641513714
1985	329.19234043955043
1986	333.9085775262152
1987	347.54824192201755
1988	360.5806202222568
1989	381.2024796924354
1990	465.2571786861133
1991	509.9357251663384
1992	338.8647132518642
1993	350.6878717942648
1994	318.69939689031776
1995	287.3979789952358
1996	269.74156545698975
1997	280.1405028672117
1998	275.38220806309266
1999	270.3640649773855
2000	323.86492641669446
2001	296.2857464210326
2002	316.29657876096934
2003	342.6993940216639
2004	389.414635907034
2005	451.9786652584303
2006	509.99758087092795
2007	603.1708473192188
2008	705.4109246847709
2009	682.4243214246842
2010	729.9717902453276
2011	769.7614550124235
2012	706.8514531379531
2013	711.7550710684252
2014	743.4951538262254
2015	714.7715646924775
2016	642.0480218824971
2017	654.6512680163867
2018	662.9430168768918
2019	686.3577992793527
2020	659.2909788443951
2021	680.6574777559265
2022	753.9542667997172
2023	894.6223894966955