Year	current US$
1990	6839999.97191131
1991	8479999.851435425
1992	8310000.034049149
1993	10300000.075250868
1994	13240000.020712612
1995	17840000.048279762
1996	18500000.121071927
1997	19360000.021755684
1998	23539999.920874827
1999	28860000.297427163
2000	35789999.85009433
2001	34249999.81373549
2002	41939999.90448356
2003	45760000.51014125
2004	57269999.50781463
2005	67180000.47095115
2006	81529999.75346027
2007	107040000.71249917
2008	118169998.57872733
2009	110599999.256432
2010	99299999.80330475
2011	104129998.82921574
2012	96080001.13815063
2013	113199999.71799558
2014	123169999.92914489
2015	104680000.02019101
2016	112600000.87320803
2017	120739999.85307448
2018	145219997.48796225
2019	141909998.12260276
2020	128280001.88246362
2021	152810003.29554078
2022	157789998.14391133