Year	constant 2015 US$
1960	1176.7648331150094
1961	1237.8993848670154
1962	1271.5893617991323
1963	1190.7339496532402
1964	1203.1459797202294
1965	1212.4793908454915
1966	1193.622404640618
1967	1189.5224080012226
1968	1240.2286461365884
1969	1291.1105991226843
1970	1327.5809606777382
1971	1389.903631275391
1972	1471.6504255917123
1973	1512.2745503217136
1974	1593.3742395935305
1975	1659.8098466378121
1976	1627.1992194789314
1977	1447.3235382368443
1978	1496.8645558785156
1979	1585.7808640276853
1980	1783.7933565859037
1981	2105.307195461133
1982	2505.1397145328474
1983	2549.7979691789933
1984	2729.3140026172277
1985	2628.9388811932677
1986	2529.242559997307
1987	2458.828159165479
1988	2242.1962672049867
1989	2208.6392530949734
1990	2081.763320708497
1991	2096.950050102829
1992	2146.666369281607
1993	1964.4979720185922
1994	1854.8288264911562
1995	1508.0121382117895
1996	1522.429890031554
1997	1672.1903712154908
1998	1841.5135996320053
1999	1542.171579040086
2000	1431.1112936802929
2001	1539.3493515573405
2002	1575.4337904246438
2003	1529.8211535272344
2004	1454.600031525668
2005	1632.2562896175991
2006	1902.0500117831339
2007	1714.9470909771733
2008	1795.1609974761914
2009	2082.841446159228
2010	2151.1034714121256
2011	2067.3630290681276
2012	2329.6910677640417
2013	2342.3681327824806
2014	2540.167181007573
2015	2442.340395739539
2016	2124.4765417493795
2017	1791.4873732858953
2018	1816.9582321756495
2019	1718.0762360365225
2020	1732.2775845808994
2021	1655.1696767379021
2022	1582.2141250898871
2023	1608.3017716526267