Year	constant 2011 international $
1990	2805.2960863734
1991	2786.35465119335
1992	2817.76579587494
1993	2816.09147507587
1994	2847.6750243692
1995	2936.26484250016
1996	3054.41163497437
1997	3112.94435412551
1998	3086.45921233711
1999	3181.09551875476
2000	3262.54519649026
2001	3348.85733825064
2002	3438.71018529817
2003	3590.82842136902
2004	3779.54479565324
2005	3967.04990484117
2006	4178.25851030852
2007	4401.65992977725
2008	4526.38088512273
2009	4685.37898287254
2010	4928.59222514448
2011	5093.03165822568
2012	5273.85807119616
2013	5488.48799262809
2014	5719.76066860924
2015	5966.28990392087
2016	6230.45433920431
2017	6499.65190524822
2018	6781.9331671671