Year	constant 2010 US$
1991	182.092999610076
1992	137.931434996761
1993	166.197864770915
1994	158.979489274192
1995	178.292462779387
1996	201.983856159405
1997	216.238800022689
1998	228.957798503553
1999	236.896733416817
2000	202.366703187283
2001	219.497241315229
2002	239.215568578708
2003	246.01844750068
2004	254.404147155857
2005	267.810336728267
2006	291.587537429639
2007	312.115143179478
2008	329.782522717828
2009	343.790047351902
2010	358.037415678899
2011	369.334484075254
2012	371.854778721132
2013	376.054899095095
2014	386.937310672754
2015	396.339081631311
2016	394.382521187572
2017	398.051667494191
2018	400.333715216602