Year	current US$
1968	2380000.1144409203
1969	2490000.00953674
1970	2480000.01907349
1971	2670000.07629395
1972	3119999.8855590797
1973	2910000.08583069
1974	2650000.09536743
1975	5630000.11444092
1976	5130000.11444092
1977	3009999.99046326
1978	3220000.02861023
1979	5519999.98092651
1980	5739999.771118159
1981	4699999.80926514
1982	2359999.89509583
1983	2400000.09536743
1984	2640000.10490417
1985	2619999.8855590797
1986	3230000.01907349
1987	3319999.9332428
1988	5670000.07629395
1989	1309999.9427795399
1990	2809999.94277954
1991	2650000.09536743
1992	1360000.01430511
1993	1720000.02861023
1994	670000.016689301
1995	980000.019073486
1996	409999.99642372096
1997	1830000.04291534
1998	649999.976158142
1999	769999.980926514
2000	649999.976158142
2001	479999.989271164
2002	790000.021457672
2003	740000.009536743
2004	810000.002384186
2005	959999.978542328
2006	1139999.98569489
2007	1049999.95231628
2008	280000.001192093
2009	189999.99761581398
2010	150000.005960464
2011	29999.999329447703
2012	10293.8897907734
2014	16115.829348564099
2015	139436.51318550098
2016	184919.685125351
2017	198832.03506469697
2018	250179.94642257702
2019	360000.01430511504
2020	331656.008958817
2021	449557.095766068
2022	513984.14373397804