Year	constant 2010 US$
1993	4850.70387659309
1994	5080.37332545961
1995	4798.6206669645
1996	5004.11569805163
1997	5390.44816885873
1998	5514.97162965201
1999	5344.93248484144
2000	5251.55748115232
2001	4896.28285115787
2002	4148.26789016195
2003	4439.29367395423
2004	4809.97680104064
2005	5112.3048035293
2006	5615.11223760663
2007	6078.47911448257
2008	6454.45806541333
2009	6045.3400039222
2010	6671.33231257047
2011	7212.70262248694
2012	7210.34140541348
2013	7389.56482487945
2014	6990.23179792168
2015	7168.11797799898
2016	7037.39458684014
2017	7242.37155791047
2018	6996.6454225355