Year	current US$
1977	889999.985694885
1980	2519999.98092651
1981	1110000.01430511
1982	219999.998807907
1983	259999.990463257
1984	319999.99284744303
1985	529999.971389771
1986	790000.021457672
1987	259999.990463257
1988	379999.995231628
1989	500000
1990	1389999.9838322406
1991	1759999.986737966
1992	1839999.975636601
1993	3439999.99947846
1994	4889999.968931082
1995	3709999.972954392
1996	7059999.972581858
1997	8349999.997764828
1998	9020000.036805864
1999	6989999.976009129
2000	5210000.006482006
2001	9249999.973922966
2002	10069999.959319832
2003	9170000.03159046
2004	7889999.985694889
2005	7989999.979734423
2006	8370000.014081598
2007	8989999.920129776
2008	10809999.972581862
2009	9910000.018775461
2010	11489999.949932097
2011	10389999.92609024
2012	11040831.089019781
2013	10760307.908058159
2014	10671041.309833523
2015	10008602.708578102
2016	8409343.808889389
2017	8720026.075839998
2018	10589880.01942635
2019	15282549.440860756
2020	19357490.0329113
2021	18414293.915033344
2022	17186069.846153267