Year	current US$
1970	9728.80263157895
1971	6956.8
1972	7056.8
1973	13176.2962962963
1974	15486.3959390863
1975	39247
1976	22196.025
1977	84441.9024390244
1978	84213.8536585366
1979	33184.3212504316
1980	40184.5185446472
1981	36483.9639609786
1982	53665.1909349769
1983	33945.6736565096
1984	30153.4181177202
1985	21573.3679333113
1986	35725.5796894681
1987	34982.4603332515
1988	39132.0938688906
1989	38398.7403628826
1990	46465.9774787038
1991	48167.425980641
1992	50806.265294772
1993	39403.4482758621
1994	36901.9853709509
1995	49018.2060606061
1996	50424.3797979798
1997	43366.4242424243
1998	43605.4545454546
1999	44329.5757575758
2000	46347.2727272727
2001	47138.1818181818
2002	47943.1515151515
2003	54273.5082396835
2004	57472.3601807549
2005	57236.3861121901
2006	78894.6121161204
2007	136984.667427362
2008	126186.61614891
2009	124161.663136859
2010	232054.425868987
2011	251665.174341852
2012	217495.459117639
2013	174938.234429165
2014	191336.524156292
2015	241190.286350452
2016	290479.944769531
2017	249637.925921011
2018	136975
2019	154197.113400829
2020	188217.830304362
2021	200104.833214525