Year	current US$
1988	7199999.80926514
1989	19469999.3133545
1990	14789999.961853001
1991	15420000.076293899
1992	9489999.77111816
1993	11199999.8092651
1994	12600000.3814697
1995	34340000.1525879
1996	31680000.3051758
1997	15649999.6185303
1998	23290000.915527303
1999	21879999.1607666
2000	19670000.0762939
2001	399470001.220703
2002	22290000.915527303
2003	72669998.1689453
2004	207690002.44140598
2005	60080001.8310547
2006	36580001.8310547
2007	115120002.746582
2008	125360000.61035201
2009	142369995.117188
2010	106180000.30517599
2011	64610000.61035161
2012	19379999.1607666
2013	27540000.915527303
2014	15000000
2015	9180000.30517578
2016	11699999.8092651
2017	12300000.1907349
2018	13939999.5803833
2019	17350000.3814697
2020	16299999.2370605
2021	29969999.3133545
2022	15880000.1144409