Year	current US$
1979	19999.9995529652
1992	720000.028610229
1993	1220000.02861023
1994	949999.988079071
1995	680000.007152557
1996	610000.014305115
1997	469999.998807907
1998	109999.999403954
2004	90000.0035762787
2010	230000.004172325
2011	1000000
2012	600.000028498471
2015	1271232.12814331
2016	1544041.6336059598
2018	1856689.33391571
2019	1857549.30973053