Year	constant 2015 US$
1993	2083.3620841569928
1994	2099.158737163049
1995	2073.2881633837173
1996	2176.929401889139
1997	2223.3447757722183
1998	2225.259931350498
1999	2291.9537536871417
2000	2363.8373545983914
2001	2518.819258114138
2002	2693.033141797981
2003	2761.77567339009
2004	2819.5347752027005
2005	2956.133517517675
2006	3084.9543365830395
2007	3346.621203131263
2008	3403.1701270710223
2009	3367.6210705365947
2010	3610.8874193789593
2011	3607.933655337298
2012	3592.94094763753
2013	3525.39299188591
2014	3437.6738321569383
2015	3201.686821129081
2016	3385.7114441000567
2017	3327.423645830518
2018	3228.5070925501295
2019	3173.459765834712
2020	3017.091575302926
2021	3233.387186894675