Year	constant 2021 US$
1989	19999.9995529652
1990	19999.9995529652
1991	19999.9995529652
1992	18629999.1607666
1993	103819999.69482401
1994	650460021.972656
1995	1295469970.70313
1996	1214060058.59375
1997	1321560058.59375
1998	1396050048.82813
1999	1973109985.35156
2000	1257619995.11719
2001	1086989990.23438
2002	889359985.351563
2003	733510009.765625
2004	853400024.414063
2005	651849975.585938
2006	624840026.855469
2007	586200012.207031
2008	440589996.33789104
2009	406450012.207031
2010	532880004.882813
2011	611950012.207031
2012	584469970.703125
2013	515530029.296875
2014	615890014.648438
2015	399250000
2016	500279998.779297
2017	488220001.220703
2018	376980010.986328
2019	495399993.89648396
2020	465149993.89648396
2021	564419982.910156
2022	295260009.765625