Year	constant 2010 US$
1993	13365.6730227998
1994	13087.7161717167
1995	13656.6330850073
1996	13533.1921185463
1997	12768.9287142321
1998	12435.1540455017
1999	12365.1568529298
2000	12370.9039993013
2001	12385.3483658823
2002	12353.102968075
2003	12362.257939293
2004	12165.1908845914
2005	12006.9420889997
2006	12122.6576451019
2007	12113.7612388141
2008	11988.9455370916
2009	11768.6833000628
2010	11469.7069314233
2011	11307.1544090268
2012	11337.96672591
2013	11226.3726762658
2014	10923.9887993418
2015	10723.4807583838
2016	10436.1792739662
2017	10215.12718046
2018	9921.99239130658