Year	current US$
1990	300000.011920929
1991	870000.004768372
1992	180000.00715255702
1993	1419999.95708466
1994	1820000.05245209
1995	4230000.01907349
1996	1480000.01907349
1997	3700000.04768372
1998	2599999.90463257
1999	2430000.0667572
2000	3099999.90463257
2001	3670000.07629395
2002	4119999.88555908
2003	4400000.09536743
2004	7409999.84741211
2005	7940000.05722046
2006	10250000
2007	10529999.7329712
2008	12149999.6185303
2009	9329999.92370605
2010	8800000.19073486
2011	6869999.88555908
2012	8260000.22888184
2013	15500000
2014	19760000.2288818
2015	23639999.3896484
2016	24040000.915527303
2017	30049999.237060502
2018	43889999.3896484
2019	42619998.9318848
2020	34130001.0681152
2021	36200000.762939505
2022	40259998.3215332