Year	constant 2011 international $
1994	1475.94971717096
1995	1832.99113491577
1996	3523.0375019447
1997	4770.5284437286
1998	5517.28993775043
1999	6032.38385353341
2000	6350.89435382331
2001	6622.67849234046
2002	6966.49232700704
2003	7239.78677600843
2004	7677.28720588557
2005	8347.23916037484
2006	8799.21428485688
2007	9320.98989805677
2008	9849.10257188081
2009	9600.23864771998
2010	9763.58778451394
2011	9976.47966210109
2012	10048.7593441417
2013	10466.0750506647
2014	10770.1636159163
2015	11273.529123625
2016	11776.1369729265
2017	12274.6083178504
2018	12756.0031010477