Year	current US$
1990	7949999.98807907
1991	12159999.89211559
1992	10430000.085383652
1993	14870000.028982764
1994	19119999.952614304
1995	23500000.20302832
1996	24350000.111386172
1997	28970000.08448958
1998	33330000.12859701
1999	39930000.20831822
2000	48900000.035762794
2001	45719999.85910952
2002	54789999.77000058
2003	64150000.83111227
2004	80339999.39635392
2005	98440000.01251689
2006	106229999.62419268
2007	138930000.63858944
2008	158549999.08059844
2009	151399998.78220257
2010	144930000.78201297
2011	149049999.33391812
2012	151870001.21921292
2013	173789999.3937462
2014	179390000.61154348
2015	158160000.37640324
2016	163660000.3615021
2017	180149999.70793715
2018	217749996.6137111
2019	210639997.17496338
2020	189790002.54720438
2021	232680004.0602684
2022	230339997.96584252