Year	current US$
1989	145606462.103901
1990	139373731.701541
1991	209326744.302017
1992	219190065.894377
1993	291608933.780412
1994	365110707.181093
1995	559350544.18435
1996	635480689.428809
1997	686758033.890391
1998	748188046.58185
1999	817578746.436492
2000	919447519.88442
2001	993841134.691303
2002	1093936376.66889
2003	1269227116.19547
2004	1493451254.95168
2005	1946051505.83465
2006	2292075182.62463
2007	2722833543.87127
2008	3566543769.06529
2009	3852628672.12102
2010	7645195241.86127
2011	6388073560.73959
2012	8626003104.04607
2013	9434435262.20792
2014	10268005434.9652
2015	10382800475.1855
2016	11106764890.1756
2017	12085217188.0845
2018	13453484353.7518
2019	14517807629.6921
2020	15168384089.2152
2021	15881094037.7738