Year	constant 2010 US$
1992	3820.27112547106
1993	3332.28183130105
1994	2900.6162234263
1995	2838.87149178358
1996	3157.66292314889
1997	3316.51827840289
1998	3354.89966529403
1999	3573.48322079044
2000	3963.120390244
2001	3979.35266879716
2002	4192.54408063601
2003	4468.25335621741
2004	4966.52489703046
2005	5425.83974978817
2006	5935.24558975163
2007	6595.10955382802
2008	6875.97421294423
2009	6155.77360353998
2010	6640.67054591441
2011	7149.47218230156
2012	7385.50756911727
2013	7587.97482747776
2014	7711.44980138387
2015	7675.00616697997
2016	7668.3315251484
2017	7915.0020965332