Year	current US$
1987	3299999.95231628
1988	899999.976158142
1989	32379999.23527236
1990	17630000.68999826
1991	12530000.144615779
1992	5589999.988675114
1993	5070000.078529124
1994	3099999.9977648226
1995	26779999.911785074
1996	26760000.020265605
1997	16900000.10281801
1998	40620000.34004449
1999	48770000.15228989
2000	49919998.67185957
2001	37369999.67880545
2002	44009998.91757959
2003	48300000.289454974
2004	47889999.0636855
2005	23960000.393912185
2006	59049999.50341877
2007	54489999.085664794
2008	89720003.33666801
2009	79960000.03442168
2010	64060000.45500699
2011	56760001.13785268
2012	4079999.938607218
2013	9240000.27775762
2014	-2269999.9362230287
2015	117169996.98616563
2016	2121889882.6949298
2017	17189998.95267185
2018	15190000.38504608
2019	14749999.463558216
2020	3499999.4337559035
2021	-5969999.833032445
2022	99860003.24226917