Year	constant 2010 US$
1995	3501.13896663169
1996	3685.30680298039
1997	3632.34764633414
1998	3551.13757139019
1999	3421.49042114496
2000	3132.28633709106
2001	3087.20611164001
2002	3098.93098694299
2003	2924.22038564164
2004	3062.87693848943
2005	3111.66538355842
2006	3336.49288268471
2007	3633.70195295268
2008	3862.36485560647
2009	3784.69187122338
2010	4148.94993123266
2011	4324.41836733874
2012	4207.50202417234
2013	4514.46854797816
2014	4686.68353062917
2015	4763.24897903572
2016	4885.41777803032
2017	5112.88616179186
2018	5242.45011344852