Year	current US$
1991	505194817.86976075
1992	451744011.85112655
1993	530192112.6663134
1994	732049313.5150138
1995	380218150.19459057
1996	444237512.9496976
1997	597406576.4503101
1998	770253953.3388246
1999	950257774.6480813
2000	843057863.5599453
2001	938989224.1659329
2002	883463345.2539846
2003	1014453151.1651096
2004	1340542818.9102836
2005	1459538224.0075386
2006	1503428737.36274
2007	1648882745.007119
2008	2051077160.842088
2009	2082317181.6572971
2010	1981732582.6994793
2011	2761401639.6262507
2012	3336669974.508145
2013	3983004048.8490095
2014	4689585196.01254
2015	4135675676.2975693
2016	3146940111.37646
2017	3258427862.7925315
2018	3262842757.5653734
2019	3502035883.7184587
2020	2937598858.417908
2021	3028263791.3388834
2022	3068144543.664566