Year	current US$
1990	1799999999.9999998
1991	612000000
1992	97011070.1107011
1993	329057264.316079
1994	313303507.45912206
1995	378154068.894732
1996	924611713.0658073
1997	1465734090.2675407
1998	1579090204.1871283
1999	1306137011.50318
2000	1219895153.3865054
2001	1305999997.8525035
2002	2125258701.206792
2003	3847900413.9914026
2004	5009484113.09296
2005	5471530672.578671
2006	6231832961.17836
2007	7072404454.3679
2008	9075971860.470778
2009	8335583111.362146
2010	9611886369.299776
2011	13307694450.705723
2012	15646761578.06643
2013	19128891925.342335
2014	20638569408.692837
2015	14768623531.570501
2016	9479846740.221666
2017	9733289564.275152
2018	9749490740.386715
2019	10179000000
2020	9677000000.000002
2021	8896588235.294117
2022	9466058823.529411
2023	10745235294.117647