Year	constant 2010 US$
1991	8669.19017406241
1992	8515.44058448662
1993	8281.45895012676
1994	8193.39255923333
1995	8085.08567117747
1996	8139.62719348581
1997	8249.79742225349
1998	8214.21752159863
1999	8318.57061515081
2000	8560.24036715813
2001	8664.50015370257
2002	8875.42178650981
2003	9052.42691748121
2004	9258.52316751108
2005	9604.59082894941
2006	9941.47123320645
2007	10542.3882672147
2008	10898.0540978146
2009	10946.738038962
2010	11303.5166092039
2011	11652.1301916713
2012	11959.308484803
2013	12217.2756004658
2014	12429.5915980087
2015	12540.5166511865
2016	12782.3272256548
2017	13106.3945498782
2018	13450.1354875272