Year	constant 2010 US$
1999	8779.89138318819
2000	8963.66583654145
2001	8667.56366237605
2002	8448.12229969998
2003	9395.76598464741
2004	9660.94817358162
2005	10642.8965689334
2006	11164.8087386679
2007	11699.3143201487
2008	11844.9252400819
2009	11607.1982788564
2010	12064.7806924218
2011	4539.00252138836
2012	10066.5790283158
2013	8649.8984096106
2014	6530.85671467715
2015	5899.89964685628
2016	5669.73394586099
2017	7085.53065888283
2018	7528.97007489327