Year	current US$
1990	41852465567.8629
1991	41614209555.0491
1992	44402319760.0365
1993	41649041442.989
1994	49615403885.8872
1995	64434657245.5855
1996	67267602314.6356
1997	66239937539.9311
1998	61651729695.0912
1999	66562160797.0017
2000	61809914250.9184
2001	53861119592.7618
2002	51376157107.1745
2003	68827952646.9382
2004	80858063179.3401
2005	88501725598.0674
2006	104623145295.333
2007	124311590043.096
2008	110865305443.993
2009	86554120311.6629
2010	105985348998.24
2011	122432434698.108
2012	107822656417.696
2013	107087143898.586
2014	115824387302.451
2015	111700570788.842
2016	116967628964.308
2017	139752471969.935
2018	161146434912.743
2019	149090929117.83
2020	120502837551.515
2021	153935546545.721