Year	constant 2011 international $
1990	3026.92990455364
1991	2824.5750664283
1992	2893.11059712793
1993	3058.92426625731
1994	2973.10599970288
1995	3061.76894522434
1996	3034.16738203092
1997	3124.91788895785
1998	3158.58780809236
1999	3071.56946930175
2000	3188.4712179707
2001	3180.89275383331
2002	3203.39193513346
2003	3245.89563067369
2004	3344.19905360062
2005	3480.10769196781
2006	3618.37195698077
2007	3817.99816626082
2008	3878.24177500587
2009	3680.85401033034
2010	3731.28488401129
2011	3763.83452008615
2012	3799.15410158744
2013	3824.98869597527
2014	3835.61521511004
2015	3955.3856892467
2016	4032.19620867667
2017	4148.26933472825
2018	4258.34502146996