Year	constant 2011 international $
1990	4534.70541671846
1991	4496.35944163441
1992	4465.48267937079
1993	4510.10581636202
1994	4543.19670098255
1995	4643.78424557331
1996	4806.8277165943
1997	4958.62625420094
1998	4987.58195254
1999	5107.48138822706
2000	5323.49227520568
2001	5451.26999253842
2002	5630.34213431873
2003	5884.81378940971
2004	6265.7591447044
2005	6631.91692879304
2006	7080.43100860488
2007	7593.87508355584
2008	7921.34878453799
2009	8048.77867562815
2010	8544.33754962164
2011	8940.29950812046
2012	9300.16324767674
2013	9673.87007943185
2014	10016.8413303334
2015	10333.4496602824
2016	10714.023472898
2017	11137.3922237946
2018	11562.5455919193