Year	current US$
1988	620000.010356307
1989	759999.9848753213
1990	409999.998286366
1991	2030000.0160932536
1992	4280000.051483512
1993	6449999.906122679
1994	8350000.0312924385
1995	5030000.027269129
1996	4750000.048428771
1997	4109999.9248981476
1998	35139999.21642242
1999	29459999.466314886
2000	19670000.217854943
2001	18390000.205486983
2002	20970000.56877734
2003	52300000.11436643
2004	54200001.02743498
2005	83749999.88079073
2006	54210000.302642584
2007	58429998.092353344
2008	42259999.48382373
2009	74330000.07085505
2010	233609999.7386336
2011	186529996.06728563
2012	205690000.60856345
2013	266090001.6874072
2014	206249996.37901795
2015	158559996.6794253
2016	129350000.31441462
2017	98149999.33540817
2018	140089998.09622762
2019	275849994.6296215
2020	162009996.23537025
2021	305320000.1902875
2022	188589999.75025642