Year	constant 2010 US$
1991	41659.6014428636
1992	42239.0776322183
1993	43738.7507535421
1994	45548.4430212077
1995	47884.4236850646
1996	45278.3681342711
1997	47788.4790250047
1998	46943.51048951
1999	52994.6772122953
2000	50661.982342626
2001	49382.7603829163
2002	52347.0315575205
2003	52246.5276708829
2004	50836.3164578331
2005	50424.4763455939
2006	50617.7194087878
2007	55913.0593112709
2008	60551.7532735839
2009	62437.3663848524
2010	57839.0904758702
2011	63729.2830077382
2012	64252.8869360182
2013	85595.9123090317
2014	82171.7797225471
2015	81759.8096748357
2016	84773.1749205815
2017	83361.19163916
2018	80778.6828674025