Year	current US$
1990	3111903700.401248
1991	1802591962.2987301
1992	475000000
1993	1916321294.6516676
1994	2307125292.280178
1995	1937755744.4129682
1996	1782354849.1728835
1997	2301219039.2218685
1998	4093478961.374919
1999	3724424177.1256986
2000	3614261918.7128487
2001	3747386082.759622
2002	4458359791.417023
2003	6231282042.477621
2004	7721246442.257873
2005	11144463668.116964
2006	13358429011.496332
2007	18977504357.63355
2008	22067857735.529358
2009	15807072056.930632
2010	17889455300.670254
2011	22160769767.710377
2012	20798454529.727238
2013	22518800799.418976
2014	23098972134.928753
2015	21630480017.4353
2016	19406220414.305046
2017	20050107440.06404
2018	23247870100.012253
2019	23931027566.556747
2020	23369624636.42721
2021	27483206611.260365
2022	24654285242.002995
2023	30540017051.789345