Year	constant 2010 US$
1991	5269.80503658582
1992	5170.68111626455
1993	5136.4645921691
1994	5095.73075355857
1995	5079.26105043902
1996	5085.02669042562
1997	5052.18064100383
1998	4784.47207191181
1999	4901.7974628037
2000	4746.62792988667
2001	4782.1448244147
2002	4832.27665756106
2003	4958.50934100813
2004	5174.00884902941
2005	5279.75801795652
2006	5401.31207382155
2007	5573.36401083483
2008	5623.87821154345
2009	5578.03199398288
2010	5756.62840298612
2011	5768.37240244267
2012	6021.49628421038
2013	6235.08590532424
2014	6378.95154228326
2015	6546.78625949191
2016	6802.6545616598
2017	7297.4565066382
2018	7586.04789040736