Year	constant 2010 US$
1991	7064.14563672277
1992	7042.29734417272
1993	6669.55776267868
1994	6491.66266909361
1995	6563.06555363899
1996	6441.87683652244
1997	6507.98811793088
1998	6559.40405456448
1999	6013.80608080861
2000	5401.15278828827
2001	6465.7280896283
2002	6363.02231343532
2003	6651.92236714808
2004	7022.23619151225
2005	7326.09048571596
2006	7520.32080094927
2007	8123.74030488525
2008	8642.60842703896
2009	8574.28197194422
2010	8718.32356913005
2011	8931.8633541464
2012	8830.75212819846
2013	8922.13275995321
2014	9032.95722424375
2015	9407.12486640507
2016	9562.15065079473
2017	9878.41680767046
2018	10076.691908646