Year	constant 2015 US$
1980	1073.4819706325452
1981	1081.7816375645316
1982	1115.87065440849
1983	1138.9848770770539
1984	1158.6550520318995
1985	1141.4326067869767
1986	1131.9721744680176
1987	1126.2757973027512
1988	1120.9052767641253
1989	1067.1196322031817
1990	1083.2286902270637
1991	1000.2006821767714
1992	1067.874956417567
1993	1071.4395334972314
1994	985.6235277504427
1995	982.9568073998347
1996	947.7497782769693
1997	964.1827109513137
1998	953.4841394243527
1999	959.9224893861323
2000	1048.3427365101627
2001	1053.872688723523
2002	1052.0903282087388
2003	1049.477068944313
2004	1053.2368509600278
2005	1066.022814028789
2006	1074.5422896281507
2007	1061.7621049375662
2008	1059.58412138981
2009	1096.4174295990085
2010	1068.8721112232067
2011	1087.4789263244515
2012	1105.8232325240476
2013	1136.8327978191803
2014	1153.092048284941
2015	1200.9197968440515
2016	1220.4878296675613
2017	1261.3457036608008
2018	1304.682463769807
2019	1304.4954978399849
2020	1209.8319013809194
2021	1218.67535706822