Year	constant 2015 US$
1995	2283.181969749165
1996	2368.2830431965876
1997	2407.913720705887
1998	2375.9227140018584
1999	2456.0363774200355
2000	2554.485657325899
2001	2626.9508033222874
2002	2715.5963940552165
2003	2768.2090657943722
2004	2859.080651241444
2005	2975.9605231754863
2006	3082.342542085797
2007	3237.3389530864415
2008	3319.648643850214
2009	3395.0459997240314
2010	3574.86872647102
2011	3773.6945977491664
2012	3939.3285517020254
2013	4109.637929999721
2014	4259.9540954602335
2015	4429.245337584357
2016	4611.347713407836
2017	4837.6407312376305
2018	5055.65454710449
2019	5224.044897618848
2020	5022.779998586391
2021	5370.055714761854
2022	5538.626176777238