Year	current US$
1990	9740283926.15371
1991	7119424007.40671
1992	8373917761.57601
1993	8407566877.69681
1994	9840801451.21147
1995	12493293141.9778
1996	13644032829.619
1997	13301754650.0549
1998	14266322196.0961
1999	14127518134.5369
2000	13553315800.0655
2001	14564948193.1641
2002	17315279210.2732
2003	21157042074.1492
2004	24485638014.612
2005	27153864783.4257
2006	30389190808.2239
2007	36743472103.8483
2008	46617852944.3011
2009	43180454291.8387
2010	43762753134.4894
2011	48202137018.9287
2012	44403677699.6519
2013	45441108464.8418
2014	44445911118.1147
2015	38913969199.7259
2016	40436308096.1859
2017	43738553234.5845
2018	49410037618.6593
2019	50298073680.3573
2020	52937215229.1552
2021	60090920984.9871