Year	constant 2010 US$
1980	3223.80899433698
1981	3370.52919134631
1982	3439.02825941883
1983	3548.13214904218
1984	3660.06888345894
1985	3758.34002719537
1986	3917.51479507007
1987	4148.59381224382
1988	4597.47543157644
1989	4498.55198005699
1990	4162.81570433754
1991	3849.18630135359
1992	3607.79367407921
1993	3582.85611598934
1994	3660.40197671228
1995	3781.90349197295
1996	3828.24642187336
1997	3809.68651346487
1998	4078.68930627734
1999	3756.75085295718
2000	3955.27580157865
2001	4186.92041902769
2002	4532.8538693831
2003	4804.48436237995
2004	5152.41400784508
2005	5561.16384273605
2006	5988.77095056511
2007	6476.05420316886
2008	6914.39843478088
2009	6709.52731467062
2010	6843.26694975885
2011	7019.17404574254
2012	7062.13497737665
2013	7136.84597816382
2014	7309.4151151672
2015	7611.55087800877
2016	7966.88200882858
2017	8331.15227287203
2018	8651.09480143084