Year	current US$
1987	12899999.856948815
1988	14809999.942779543
1989	53160000.03553928
1990	104920000.4618615
1991	106400000.23506574
1992	119359999.27297242
1993	64989999.18811015
1994	97180002.1138042
1995	67760000.39093192
1996	202200000.04768348
1997	169770000.1113117
1998	141090001.19008118
1999	122430003.05444004
2000	71429999.59737071
2001	82969999.34315687
2002	161489998.89008713
2003	159500001.04680666
2004	211539999.53717005
2005	711790003.7840008
2006	449219991.9521808
2007	458110000.8040667
2008	750569996.7034161
2009	780950006.5334141
2010	670850012.8388404
2011	404349998.52813774
2012	232399999.22923747
2013	370360000.4743789
2014	103760000.83237883
2015	62389999.80315557
2016	57390000.61899425
2017	137740000.78625977
2018	71100000.5137176
2019	112119998.45132236
2020	112570001.66922809
2021	198579997.84313145
2022	160840000.03710395