Year	constant 2010 US$
1991	1027.57701611655
1992	1044.83206409413
1993	1060.04428338126
1994	1079.9184227129
1995	1077.31355315781
1996	1144.00301620708
1997	1128.75289431316
1998	1143.0757603516
1999	1161.50464323224
2000	1131.85268251539
2001	1174.20494612524
2002	1181.08896660931
2003	1240.34267905414
2004	1269.12491319002
2005	1314.18290557605
2006	1381.12228382842
2007	1438.46216739473
2008	1477.8820340767
2009	1518.00724436876
2010	1594.26452321612
2011	1698.90844104468
2012	1788.11877616556
2013	1859.07028014884
2014	1887.86889113744
2015	1937.55100440688
2016	2004.08837238709
2017	2079.3722905346
2018	2130.82235379056