Year	constant 2015 US$
1990	19027971880.69491
1991	17436633046.083973
1992	16891197618.565615
1993	18847568413.217957
1994	19513374894.24022
1995	20961846191.976936
1996	21538746295.56053
1997	22235939786.74569
1998	22931294815.07108
1999	24323585927.591
2000	24518253292.789825
2001	25220277603.100765
2002	25876317042.14686
2003	26728010203.351547
2004	27477669230.595684
2005	28100093757.594513
2006	28601347272.295296
2007	30105917760.807796
2008	31146769555.70936
2009	31790333631.813267
2010	32020844920.456623
2011	32197438320.66717
2012	31478489500.72264
2013	30402307486.844906
2014	30748583131.4703
2015	31397275376.15467
2016	32629460450.018734
2017	33123669667.376938
2018	34232749847.974594
2019	35778986983.58162
2020	34444459331.173416
2021	37564442864.99763
2022	38473487857.03161
2023	39080751999.89294