Year	constant 2010 US$
1991	1295.2599058151
1992	1318.41027446931
1993	1338.37170011243
1994	1351.40299536933
1995	1362.93907554751
1996	1428.50251318647
1997	1403.88938775151
1998	1429.68713638438
1999	1448.55753135912
2000	1423.4371864683
2001	1448.78315303583
2002	1427.56444791361
2003	1479.60964401279
2004	1504.30379637733
2005	1572.40906019415
2006	1634.28109467235
2007	1692.85531210543
2008	1705.57566470267
2009	1731.64093098085
2010	1849.10002838836
2011	1952.72873762274
2012	2031.12606773852
2013	2111.19464759889
2014	2135.36916065241
2015	2150.73872324602
2016	2198.43498796091
2017	2277.69057292649
2018	2182.20884402889