Year	current US$
1988	150000.005960464
1989	4670000.07629395
1990	5349999.90463257
1991	289980010.986328
1992	133470001.220703
1993	41290000.9155273
1994	9470000.26702881
1995	13359999.6566772
1996	27629999.1607666
1997	30889999.3896484
1998	13739999.7711182
1999	73559997.55859381
2000	18340000.1525879
2001	21659999.8474121
2002	24110000.6103516
2003	20799999.237060502
2004	18250000
2005	8640000.34332275
2006	30129999.1607666
2007	18360000.6103516
2008	33580001.8310547
2009	37400001.5258789
2010	54799999.237060495
2011	40419998.1689453
2012	32000000
2013	9489999.77111816
2014	14130000.1144409
2015	25069999.6948242
2016	10220000.2670288
2017	7719999.79019165
2018	16139999.389648398
2019	19100000.3814697
2020	13859999.6566772
2021	13590000.1525879
2022	14979999.5422363