Year	current US$
1990	159978988.436658
1991	168710266.641585
1992	158122722.833275
1993	110284918.221137
1994	109499838.489221
1995	115219010.99862
1996	118418059.424753
1997	100415159.724273
1998	92768168.4223455
1999	87788451.7590072
2000	76731604.5710937
2001	67525801.8241054
2002	70736909.3005145
2003	81725011.7421829
2004	86347162.1370051
2005	82470138.4690247
2006	85347934.2032737
2007	98488119.2390256
2008	107078788.469208
2009	94878480.7433439
2010	99769533.1419319
2011	105504968.253994
2012	95129144.4924278
2013	89467979.3097967
2014	74901294.13402
2015	57040484.8480153
2016	55047166.7037278
2017	54957480.8038991
2018	56251616.9076684
2019	52605226.2008817
2020	54224083.7205157
2021	59275614.8995044