Year	current US$
1987	12799999.83310696
1988	6809999.883174891
1989	24480000.440031268
1990	30809999.383986022
1991	23350000.25108458
1992	22819999.34837218
1993	16590000.111609679
1994	12070000.46409666
1995	15719999.857246837
1996	14059999.823570263
1997	16180000.346154014
1998	19040000.30085449
1999	13630000.354722137
2000	16720000.144094236
2001	16639999.687671665
2002	19270000.299438823
2003	22979999.983683217
2004	42059999.667108044
2005	39359999.88019468
2006	34910000.34473838
2007	105509998.34761032
2008	87100000.09275971
2009	101630001.02341178
2010	73750000.44703485
2011	57710000.1052022
2012	24240000.652149316
2013	15539999.494329091
2014	4259999.93644655
2015	320000.1958757709
2016	740000.0076740996
2017	5690000.006929041
2018	8189999.997615816
2019	2520000.1727789654
2020	4020000.0628829068
2021	7289999.920874842
2022	5309999.96885657