Year	constant 2010 US$
1991	1051.04120700487
1992	1074.92904082743
1993	1111.73079289242
1994	1158.85573744148
1995	1251.99871245591
1996	1322.01501965675
1997	1354.68451986036
1998	1358.21755571945
1999	1379.37449732263
2000	1402.5097034811
2001	1466.04902920408
2002	1509.93867182192
2003	1582.74203882965
2004	1714.51601459772
2005	1823.26654014113
2006	1976.47955256956
2007	2100.51355863856
2008	2256.58822112648
2009	2383.87237594759
2010	2515.94723147311
2011	2748.22746458135
2012	2894.74864851786
2013	3196.31478347966
2014	3497.7554100811
2015	3709.02023998435
2016	3889.06601375598
2017	4154.2314197197
2018	4296.32217820234