Year	current US$
1991	6983236221.315314
1992	6369053252.190515
1993	4983223936.250057
1994	7059569070.895924
1995	10742152792.747503
1996	11796455475.290327
1997	12885504086.96006
1998	13221863446.045437
1999	11986503661.460587
2000	11509051694.80954
2001	13407820585.54038
2002	15926806955.468267
2003	17630119831.462902
2004	24013567728.653316
2005	26252462014.455173
2006	28675288749.465282
2007	34994924460.506096
2008	39741890952.06471
2009	32121480643.88112
2010	34278374403.385468
2011	37637641441.39663
2012	33840639703.840763
2013	38121030867.922844
2014	42180183575.6407
2015	39110375627.61226
2016	38523929336.82233
2017	42524160087.45299
2018	49870589106.071106
2019	50356044863.41429
2020	45876015974.19881
2021	56149291445.94516
2022	52276902362.92681
2023	64689081580.15233
