Year	constant 2010 US$
1991	11534.3290752397
1992	12133.8387076194
1993	11851.7249284072
1994	11579.4086827722
1995	11216.6907300956
1996	11666.8851767378
1997	12745.156670878
1998	11073.6939915162
1999	11068.2164642437
2000	11353.229090508
2001	13459.3977870047
2002	13656.8404050376
2003	14764.1326962394
2004	14729.8854611165
2005	14611.7589233016
2006	15088.8594056864
2007	15866.6125176621
2008	15984.2312637109
2009	14447.0798059139
2010	15259.7258915122
2011	19261.900821402
2012	16960.1751942883
2013	16194.3428682284
2014	17076.3881794516
2015	16620.7357177162
2016	17029.7167259766
2017	18119.6869875052
2018	17873.5660504094