Year	constant 2011 international $
1990	30647.8257622521
1991	31093.8655612227
1992	31441.9818125753
1993	31018.1440636557
1994	31920.5607358943
1995	32613.4125258345
1996	33068.3971189009
1997	34212.4817296127
1998	34813.8552388618
1999	35971.8519385873
2000	37188.6394500032
2001	37361.7179057106
2002	37856.860173232
2003	37990.6481933893
2004	39201.5251968517
2005	39802.9675336697
2006	40532.2682610931
2007	41623.4378839282
2008	41619.3300965694
2009	40355.5647103738
2010	41085.9175030485
2011	41284.1510136804
2012	41125.241157877
2013	41013.9921057712
2014	41344.6362757704
2015	41820.8268335992
2016	42214.0246055038
2017	42781.0578154979
2018	43217.9522397785