Year	constant 2011 international $
1990	1386.93324163904
1991	1224.28922162479
1992	1053.89577801367
1993	877.129534234228
1994	812.826913396141
1995	792.465521320564
1996	762.692294539904
1997	702.278039863827
1998	675.116881692552
1999	631.23387406596
2000	572.81264458686
2001	545.466047171768
2002	545.295848073893
2003	558.315350459509
2004	577.483297246379
2005	593.703717257799
2006	605.488092465724
2007	622.743608963059
2008	640.079809997034
2009	636.875743152411
2010	659.795884207033
2011	682.007331979067
2012	706.367202606293
2013	741.17388815136
2014	784.872655916521
2015	811.892718057311
2016	804.522977816384
2017	807.752905129755
2018	827.138253236364