Year	constant 2010 US$
1980	251.347184199503
1981	242.932031456585
1982	224.431656452098
1983	184.510651925605
1984	173.186415104405
1985	175.172791781443
1986	172.989524276518
1987	162.672793659729
1988	165.458710127002
1989	171.985811162629
1990	140.38128579598
1991	173.942240727317
1992	139.862205729665
1993	145.451473910612
1994	155.436115194368
1995	138.169204903096
1996	173.566880384467
1997	198.093388884038
1998	183.497752221568
1999	133.882818199928
2000	194.798907171005
2001	191.606080384685
2002	212.168849403079
2003	256.221420918613
2004	273.379761272215
2005	293.045057965827
2006	303.13345960877
2007	325.461835826326
2008	344.816614919745
2009	366.360773963495
2010	356.200999308011
2011	362.499918179727
2012	353.0035111279
2013	408.623316353663
2014	441.823664680147
2015	456.614754476028
2016	456.232535031685
2017	418.780933407708