Year	current US$
1987	13999999.880790675
1988	16809999.883174896
1989	63480000.130832195
1990	122170000.28304757
1991	118200000.04023306
1992	131769999.44448479
1993	73859999.18170264
1994	104530002.32391058
1995	78750000.12293454
1996	213079999.92370582
1997	175720000.11801723
1998	160550000.93951815
1999	144410002.51471996
2000	82209999.65816745
2001	86549999.12716454
2002	160709999.43837532
2003	154570001.6468764
2004	176429999.53962868
2005	555640007.0413944
2006	266219993.90423322
2007	464889999.4436654
2008	680149998.0725348
2009	871240002.8146803
2010	694320009.2297046
2011	415299998.99864185
2012	223099998.7442047
2013	362540001.040325
2014	107270000.91038641
2015	62810000.20727507
2016	58720000.88915231
2017	134360000.9214133
2018	74120000.40709981
2019	112659998.56032436
2020	108580002.14211644
2021	209539998.292923
2022	154119999.96192756