Year	current US$
1971	1009120.16158032
1972	1395846.58249324
1973	1801992.93864211
1974	3548687.11086799
1975	7939176.55849796
1976	4807319.2575767
1977	5551128.98976613
1978	5830632.19610795
1979	6220236.26081731
1980	7119026.12909256
1981	8339651.17273196
1982	10805579.1814135
1983	5282127.00632197
1984	8078786.38097837
1985	8348906.22292456
1986	9960311.69866306
1987	11879253.002112918
1988	12998201.194679629
1989	10855830.1647955
1990	10165919.895107701
1991	11904760.51628501
1992	12731984.589433108
1993	12691419.939753959
1994	12370690.232263831
2001	15840102.340767018
2002	19063654.58500854
2003	18088818.09805824
2004	22029328.44855276
2005	21004103.85114146
2006	26592862.85152012
2007	20367724.324111488
2008	34231203.861520655
2009	29130925.43664276
2010	29333058.400721796
2011	48141108.17188716
2012	57897340.78911955
2013	74278891.92113721
2014	55100164.943154395
2015	46617396.18120498
2016	74226455.22553292
2017	76772179.67182928
2018	86640810.20245324
2019	93668493.55849317
2020	78186405.22040106
2021	39621864.92587463
2022	42717663.72332875