Year	constant 2011 international $
1990	4969.24356458872
1991	5106.74304610526
1992	5217.23156879267
1993	5312.63365657581
1994	5401.64843760082
1995	5534.99907356847
1996	5549.80981328909
1997	5670.09773563634
1998	5845.29393294436
1999	5924.69458417169
2000	6002.36779040388
2001	6041.2568628978
2002	6062.54757055269
2003	6076.76182798252
2004	6107.89908617292
2005	6159.54430760437
2006	6316.27112778819
2007	6551.67336542804
2008	6641.25011383103
2009	6501.44648169216
2010	6536.99732038558
2011	6630.36310418122
2012	6746.55123471165
2013	6867.1558011024
2014	6975.66677333182
2015	7127.7137938506
2016	7199.3139069641
2017	7283.30857037274
2018	7377.91581309187