Year	constant 2015 US$
1995	4901.584886764276
1996	5061.710796442745
1997	5394.411741165827
1998	5906.320085861321
1999	6118.484494907169
2000	6440.811487573187
2001	7003.404379491272
2002	7508.219882146844
2003	8208.414909957628
2004	8915.322266836509
2005	10050.021116860009
2006	11227.615335682376
2007	12832.117330385492
2008	12711.145390914664
2009	12000.414283804288
2010	11051.477396856468
2011	11616.947824730447
2012	12291.596732754719
2013	12781.46422158154
2014	13130.945955600955
2015	13722.049259135028
2016	14485.144586016397
2017	15122.761673707348
2018	15812.473824461513
2019	16129.808398727935
2020	16077.524260441824
2021	16799.787559133198
2022	17511.02050109413