Year	constant 2015 US$
1990	68632906.34769608
1991	57500634.616768494
1992	74069958.98925786
1993	77458046.9385021
1994	74344256.13977656
1995	66083787.93504255
1996	66890479.57030742
1997	51982884.13419866
1998	52241023.7655966
1999	49950039.82408621
2000	53789861.55398423
2001	45561792.98183269
2002	51371224.75198573
2003	50806895.9035323
2004	51363738.15281197
2005	53175283.66700864
2006	61901147.638459265
2007	62608144.842918806
2008	63543758.25378598
2009	59219168.65309463
2010	64604698.180765264
2011	74280133.62933923
2012	77266609.94494045
2013	79159069.94625235
2014	73504403.52286075
2015	73796296.2962963
2016	77183453.70779014
2017	80966935.60661785
2018	83802114.94343643
2019	87545837.50201935
2020	81663147.03260674
2021	84897611.65869233
2022	88739463.65277305
2023	92931113.24666715