Year	current US$
1979	1564873.695
1980	1594089.389
1981	1953541.16
1982	2535849.81
1983	2252221.823
1984	2193907.738
1985	4055464.745
1986	4113039.017
1987	5100897.789
1988	4055759.43
1989	4190268.9930000002
1990	5143410.206
1991	6058005.81
1992	6023581.505
1993	6101757.05
1994	6899648.666
2005	0
2006	12990238.5181378
2007	13940691.5511768
2008	14372521.4049296
2009	14047575.9796807
2010	15649980.5552749
2011	17030625.9633628
2012	17642506.704904
2013	17254064.883029
2014	16381031.1037501
2015	14048045.1044275
2016	16294959.638821
2017	17959541.3915397
2018	19978146.6253932
2019	20075191.1375462
2020	14916124.276333
2021	13358399.6834462
2022	28359193.1055774
2023	15000000