Year	current US$
1988	29999.999329447783
1989	19999.99955296516
1990	129999.99895691921
1991	3469999.9745935183
1992	2679999.9885261045
1993	2569999.9704957
1994	2399999.9854713674
1995	3529999.965801836
1996	3029999.9676644797
1997	3580000.003799795
1998	1170000.001788139
1999	1279999.9807029965
2000	1069999.9984353778
2001	1410000.0113248823
2002	4699999.952688811
2003	6459999.935701495
2004	2229999.9911338077
2005	5939999.882131813
2006	4549999.922513964
2007	9560000.022873282
2008	8020000.0591576025
2009	5769999.973475926
2010	6449999.922886492
2011	13459999.874234196
2012	16570000.186562533
2013	11149999.827146526
2014	11909999.97779726
2015	18790000.179782506
2016	22390000.47743321
2017	25510000.256821543
2018	24919999.983161677
2019	32330000.12859701
2020	33199999.43301078
2021	39820000.05245206
2022	37150000.685825944