Year	constant 2015 US$
1987	78756719039.89925
1988	85318187381.6121
1989	79563653082.0138
1990	84427824464.50322
1991	79201790430.52681
1992	80997289598.80846
1993	79757977531.06496
1994	75115211668.03253
1995	73433802010.45827
1996	73560030901.07848
1997	72895620593.9762
1998	74896138215.12543
1999	74264056454.26265
2000	78206106294.74219
2001	77288317778.89236
2002	82069878451.2552
2003	81676138443.38492
2004	87173058719.5387
2005	92224454190.2899
2006	94700561640.12152
2007	92857223786.26376
2008	97861096344.92169
2009	101809278966.19049
2010	105619315606.78377
2011	113213284709.4569
2012	113459614359.04741
2013	119906866528.87857
2014	121937854049.33618
2015	128909492046.22849
2016	130868959475.2662
2017	133949382285.1598
2018	136944984641.05548
2019	140302988300.99585
2020	144443154548.13113
2021	145072718791.52805
2022	144313588965.8632
2023	145942235249.4454