Year	constant 2010 US$
1991	1648.56993906825
1992	1634.70147974309
1993	1652.91188162107
1994	1721.16525706695
1995	1739.66065115983
1996	1743.99635526793
1997	1789.60293219595
1998	1799.45454879148
1999	1844.44267459141
2000	1931.36458613368
2001	1965.37101639387
2002	1940.71480433633
2003	1982.35901418708
2004	1992.49405615147
2005	1999.41418545739
2006	1981.10985818284
2007	2119.88284456692
2008	2292.91774277041
2009	2268.50250270208
2010	2280.11708648059
2011	2404.35709573283
2012	2427.30582615602
2013	2474.63659871418
2014	2536.47529584917
2015	2587.49188601253
2016	2600.75641784993
2017	2585.76857765764
2018	2656.70665287711