Year	current US$
1987	12799999.83310696
1988	6809999.883174891
1989	24470000.44025478
1990	30809999.383986022
1991	23310000.25197865
1992	22779999.34926625
1993	16550000.112503748
1994	9050000.455230473
1995	15699999.857693871
1996	14619999.798014771
1997	16500000.340864101
1998	19100000.299513385
1999	13330000.35025179
2000	16530000.146478422
2001	16329999.694600701
2002	19190000.301226966
2003	22809999.98375772
2004	41009999.64959918
2005	38839999.88436701
2006	34380000.33423306
2007	102969998.33919117
2008	84500000.115484
2009	99120000.97706917
2010	72640000.46066941
2011	57030000.11481345
2012	24170000.651851296
2013	15269999.491050836
2014	3109999.9397993125
2015	100000.20079315396
2016	550000.0081956408
2017	5309999.998658896
2018	7759999.990463259
2019	2050000.1870095748
2020	3410000.0429898575
2021	5309999.899938712
2022	4619999.950751659