Year	current US$
1970	36899999.14169312
1992	135630001.06811532
1993	206510000.2288819
1994	307680000.3051756
1995	325569999.6948241
1996	236780000.68664542
1997	263520000.45776343
1998	298000000
1999	286000000
2000	300780006.408692
2001	359369997.0245362
2002	392200010.2996829
2003	430060009.00268555
2004	448780012.130737
2005	350109992.98095703
2006	371809997.55859387
2007	388440000.5340575
2008	473190010.07080024
2009	472830005.6457518
2010	544969993.5913084
2011	607940002.4414059
2012	667344253.5400399
2013	538640365.6005853
2014	680100343.704224
2015	771379474.6398937
2016	716534053.8024905
2017	892903842.9260255
2018	759275669.0979009
2019	765022006.9885254
2020	774581981.6589367
2021	727358493.8049312
2022	851476039.8864746