Year	current US$
1990	27736919364.794
1991	18158936284.8254
1992	9987742874.29768
1993	17398936185.7054
1994	24234697315.521
1995	23515594796.4544
1996	30139285144.6874
1997	34834560914.0763
1998	29878517266.319
1999	25452202671.3381
2000	25957910487.5756
2001	22387732110.8853
2002	27887476216.9157
2003	32250147743.3275
2004	45219680845.0623
2005	43564003241.6131
2006	48392408155.3499
2007	48041960870.0867
2008	64039883785.6615
2009	85479495774.3251
2010	82487257093.6841
2011	117602149015.214
2012	159179756744.663
2013	150277315346.257
2014	118783335706.004
2015	96418905292.7518
2016	62161507393.9104
2017	83246249581.1873
2018	84325679533.6974
2019	84709758703.631
2020	92843650409.261
2021	98542134250.3699