Year	constant 2015 US$
1995	3452.0740095550195
1996	3751.6923009634115
1997	4023.9235985378095
1998	4221.761985826041
1999	4456.223724329477
2000	4633.483483174978
2001	4728.390445408957
2002	4913.719790717377
2003	4984.982979379361
2004	5204.161762578185
2005	5301.003595319219
2006	5555.182053094336
2007	5872.085682585506
2008	6263.373314616388
2009	6474.702896986072
2010	6682.828099128613
2011	6838.275936243002
2012	6897.771332385282
2013	6897.2357004740825
2014	7125.0607183090615
2015	7399.732018223711
2016	7676.6400354030775
2017	8149.582462642773
2018	8526.200757620622
2019	8818.6390433755
2020	8530.486884372864
2021	9087.638899100339
2022	9832.608801287339
2023	9754.750103847875