Year	constant 2015 US$
1990	29452716336.86793
1991	29099285028.635754
1992	26305753290.58023
1993	24306515540.912186
1994	21462652290.354237
1995	19230536338.72805
1996	19768992246.13797
1997	22022658441.203865
1998	23872559843.852646
1999	24684226697.456352
2000	26115912675.50365
2001	27349969477.166916
2002	28729848599.948242
2003	30753347145.232735
2004	34274526374.858948
2005	37496332398.59461
2006	41245963659.150055
2007	44793119255.66547
2008	49362017183.55908
2009	49460738872.926735
2010	53317819268.921
2011	56185628815.10614
2012	57133556524.042404
2013	57706875064.52828
2014	58703016906.46287
2015	56454889146.60878
2016	55028933824.64419
2017	56422059344.40138
2018	58199150811.714615
2019	59040830813.23459
2020	58643542627.10165
2021	60073780097.18024
2022	57275396304.676155
2023	59501256894.3374