Year	constant 2015 US$
1960	4.517005186822962
1961	4.511373260701532
1962	5.106374227212952
1963	5.723369091729225
1964	6.060066657134748
1965	6.1815950472947625
1966	7.0015622626672
1967	6.728063297678233
1968	6.704968081656131
1969	6.74975053724307
1970	7.085933400576076
1971	7.855434405764556
1972	9.123732775456892
1973	11.99190015571687
1974	15.239766978980388
1975	17.817733257897938
1976	21.8956232385913
1977	26.528395795923032
1978	29.3305238365395
1979	33.94818111053764
1980	38.818804593483165
1981	45.74039445100351
1982	52.24870816998668
1983	60.516381946262015
1984	67.58390341406242
1985	72.37552603993471
1986	80.69955259835764
1987	82.20627221485788
1988	99.7675486284181
1989	114.94151972402003
1990	120.36367088772532
1991	144.3690141040575
1992	154.24849323630863
1993	167.10165976551443
1994	173.9104318304254
1995	188.03369053205626
1996	208.50158888569626
1997	255.95796856153837
1998	358.51199984655466
1999	382.6281663776471
2000	411.0797556057311
2001	417.27418444990093
2002	488.79217780450557
2003	521.8384103468356
2004	556.9815360650863
2005	602.4131191043394
2006	659.5599615728154
2007	600.1311967047728
2008	669.1845190444234
2009	719.2935850223174
2010	781.5125877978104
2011	813.0517613237243
2012	820.7705738597381
2013	804.4563161736047
2014	799.3265493699033
2015	852.7375455022806
2016	828.7809455579807
2017	872.4614510766896
2018	862.4335137521414
2019	817.0481523058868
2020	829.1710081510411
2021	812.472592680841
2022	792.3289530232544