Year	constant 2015 US$
1991	44372275818.31221
1992	38795526164.14469
1993	36385392453.77451
1994	34377591879.02305
1995	37089939140.048325
1996	38158062468.97479
1997	36366961793.36936
1998	35845118664.95646
1999	38607983471.08044
2000	38742399826.30374
2001	39438316959.69534
2002	41717080826.34106
2003	42934453350.87363
2004	45110069699.37416
2005	47068371828.39403
2006	48965808989.238205
2007	50847805423.57402
2008	52046539772.50001
2009	52592462917.18097
2010	53880303513.98255
2011	56727256717.510414
2012	59611873677.747284
2013	62344482522.75716
2014	65023541416.26517
2015	69376196909.81534
2016	73377424753.05147
2017	77556181747.05753
2018	82325680206.93889
2019	87233400005.7414
2020	86016349973.04416
2021	90525353482.04274
2022	92907108730.6539
2023	95926859809.60402