Year	current US$
1988	1360000.0161677601
1989	1819999.9872595067
1990	1509999.9755620947
1991	14810000.069439411
1992	19410000.33169984
1993	23809999.832883473
1994	21970000.22977591
1995	22440000.081434835
1996	39479999.35597181
1997	59990001.29289934
1998	62529999.62680039
1999	52299999.63939191
2000	53059999.77514151
2001	73060000.50343578
2002	78519998.9825487
2003	103329999.77096903
2004	125379999.70838426
2005	172060000.87037677
2006	144639999.76590285
2007	217279998.2391298
2008	225420000.73753294
2009	242869998.11977142
2010	373730000.1308321
2011	425939993.5994296
2012	414760001.49548054
2013	444110001.97753304
2014	539859999.3307145
2015	618799996.2344764
2016	592430002.6819111
2017	717950005.0842763
2018	804989999.7785686
2019	1058039990.9578264
2020	976610009.0034304
2021	1237449995.9349632
2022	1164969987.7612298