Year	constant 2015 US$
1990	30125631585.848423
1991	32678397735.08553
1992	33332089444.855057
1993	33180730805.828884
1994	33664000226.085526
1995	34242230635.624977
1996	34709335562.5781
1997	35446052121.9531
1998	36413658313.867165
1999	38498100181.48435
2000	38309926795.23435
2001	37012129567.07029
2002	35361507239.68748
2003	34059937667.69529
2004	38080257626.87498
2005	36225706830.19529
2006	36003138544.335915
2007	36177664922.03123
2008	36843039802.53904
2009	36285620526.28904
2010	36554344548.39842
2011	37397574345.27342
2012	36687929900.429665
2013	37054180105.624985
2014	36213502188.39842
2015	37930917191.79685
2016	37909503593.00778
2017	36482780966.9531
2018	37158918122.49997
2019	36570654387.8906
2020	34886968576.367165
2021	34631447757.65623
2022	35455926786.679665
2023	34579522554.37498