Year	current US$
1991	3067870193.959459
1992	4035827865.8893456
1993	4721903219.935864
1994	5248808365.230231
1995	5897016450.549829
1996	5790319341.233179
1997	5941726020.815289
1998	5322752249.81504
1999	5017987074.331976
2000	5466178247.922352
2001	5619592954.503018
2002	6262328944.549609
2003	7014001948.077611
2004	8792507664.072481
2005	10024634677.16215
2006	11594683247.711096
2007	15209211118.07158
2008	17863969446.803097
2009	19268480338.184406
2010	26541269750.62036
2011	35414147400.516426
2012	41279801508.511284
2013	49580718102.00075
2014	51767913101.190674
2015	41319054823.06737
2016	41835812696.4337
2017	47111132929.08884
2018	52042073175.0372
2019	51551148817.85075
2020	22569733468.08424
2021	28269451674.167313
2022	22046802028.367287