Year	current US$
1990	10109593985.338
1991	10096795543.7375
1992	10317850184.2515
1993	10505091787.5795
1994	10868341622.1301
1995	11121645562.7286
1996	11320297078.333
1997	11578779464.4421
1998	11660214682.9058
1999	12177551351.3648
2000	12937012104.9427
2001	13619934694.2705
2002	14187520323.3311
2003	14584358708.5894
2004	14759185945.9168
2005	15404477325.4974
2006	15743990483.1462
2007	15505814855.9259
2008	15304652955.3154
2009	14646463271.6508
2010	14057501619.9592
2011	14255574582.5216
2012	14335206071.81
2013	14086636318.1455
2014	13885259975.001
2015	13868133672.9523
2016	13675159556.4978
2017	13394575255.3538
2018	13853755903.7568
2019	14357764916.4959
2020	14731639352.9306
2021	15546091967.0888