Year	current US$
1988	5559999.94277954
1989	10340000.1525879
1990	11050000.1907349
1991	331950012.207031
1992	409640014.64843804
1993	270679992.675781
1994	163100006.10351598
1995	180600006.10351598
1996	226639999.38964802
1997	168229995.727539
1998	268739990.234375
1999	488179992.675781
2000	317850006.10351604
2001	268529998.779297
2002	307359985.35156304
2003	349309997.558594
2004	300940002.441406
2005	315079986.57226604
2006	324040008.544922
2007	265720001.220703
2008	344910003.66210896
2009	330730010.986328
2010	365070007.324219
2011	379480010.986328
2012	349160003.66210896
2013	269980010.986328
2014	281170013.42773396
2015	335160003.66210896
2016	171039993.28613302
2017	168350006.10351598
2018	344519989.013672
2019	27069999.6948242
2020	309579986.57226604
2021	633419982.910156
2022	315510009.765625