Year	constant 2015 US$
1995	2211634206.372657
1996	2677227976.7687507
1997	3363506080.135938
1998	4075778961.0175786
1999	3835539463.349219
2000	3572374100.821875
2001	4027223348.385156
2002	4473691335.572656
2003	5102658660.0875
2004	5909038205.326172
2005	6586920624.650001
2006	7877525990.257031
2007	9636923851.923828
2008	9251801941.971874
2009	5652613133.609374
2010	5736007451.007421
2011	6891626149.802342
2012	6769072684.442576
2013	7330870098.558982
2014	7749665724.741403
2015	8125991416.49648
2016	8400182008.617965
2017	9148156795.294136
2018	10065211360.885542
2019	10780331251.844526
2020	10759933966.863277
2021	11767860966.735542
2022	12192623553.243746
2023	13480997688.42773