Year	current US$
1992	38299999.24
1993	498856128.01339996
1994	1457057400.0255
1995	1904337619.1149108
1996	2090986524.269412
1997	2091623416.6629493
1998	2611753537.889963
1999	2281903309.122759
2000	3650744137.5275397
2001	4638350241.209736
2002	5352262289.767746
2003	7388254571.50798
2004	11914402662.663164
2005	16645124627.89317
2006	20317459523.022247
2007	24671264338.70193
2008	27226613973.86053
2009	22540637222.108982
2010	20095292444.949898
2011	22032681348.124947
2012	21507437878.902973
2013	29210920497.02916
2014	30820427189.123035
2015	28730813853.33477
2016	30452200721.236332
2017	33178290188.37344
2018	35398224928.248276
2019	36762857649.48189
2020	34305681764.35384
2021	37420970720.90421
2022	36293320381.46406