Year	constant 2011 international $
1990	2246.65114137848
1991	2383.61498881505
1992	2592.15123810384
1993	2824.78629374005
1994	3074.83085581045
1995	3326.95250627991
1996	3575.34946569944
1997	3770.22236868908
1998	3759.80628388415
1999	3937.98581402387
2000	4185.99891678943
2001	4416.27091681876
2002	4712.86387055572
2003	5071.68478524516
2004	5470.87953575088
2005	5939.74573706968
2006	6509.26585709472
2007	7222.013520733
2008	7758.66668476669
2009	8273.67174333303
2010	9003.11022607817
2011	9676.71659503232
2012	10321.5933468113
2013	10973.8505418632
2014	11618.2008264057
2015	12276.7184222326
2016	12955.0175094894
2017	13686.2752688053
2018	14451.2247679601