Year	constant 2011 international $
1990	3195.47940892648
1991	3199.20770333273
1992	3306.13301726511
1993	3262.922875742
1994	3275.96254310173
1995	3361.45184482123
1996	3386.08849871668
1997	3307.27469348157
1998	3291.28405990412
1999	3320.63213564981
2000	3358.32870985866
2001	3338.67140440486
2002	3429.68020945248
2003	3605.45949600342
2004	3748.25970485883
2005	3937.52510072945
2006	4074.8175111446
2007	4170.17720383199
2008	4154.81269907991
2009	4204.8553041249
2010	4226.99573169572
2011	4278.28464364011
2012	4359.68084226516
2013	4457.15030612001
2014	4590.2813614432
2015	4727.42946599335
2016	4891.09038898256
2017	5033.24492882573
2018	5190.0794097342