Year	current US$
1988	699999.988079071
1989	70000.0002980232
1990	310000.002384186
1991	449999.988079071
1992	389999.98569488496
1993	319999.99284744303
1994	230000.004172325
1995	200000.00298023198
1996	250000
1997	1049999.95231628
1998	430000.00715255697
1999	730000.019073486
2000	1929999.94754791
2001	2579999.92370605
2002	949999.988079071
2003	1230000.01907349
2004	469999.998807907
2005	219999.998807907
2006	550000.011920929
2007	1299999.95231628
2008	209999.993443489
2009	1440000.0572204601
2010	1269999.98092651
2011	1590000.0333786
2012	159999.99642372102
2013	100000.00149011599
2016	9999.99977648258
2018	39999.9991059303
2019	29999.999329447703
2020	29999.999329447703
2021	9999.99977648258
2022	9999.99977648258