Year	constant 2010 US$
1991	11150.6154100317
1992	13753.7862936182
1993	14313.5578698099
1994	13274.1408985301
1995	17462.0190463551
1996	20162.029802052
1997	18920.9300873405
1998	24346.9112729941
1999	28966.4908999124
2000	31500.3551289708
2001	35575.7433633272
2002	33216.1692743193
2003	29948.5126801489
2004	30497.4598665549
2005	30520.9177283988
2006	28944.0042099931
2007	25437.1959374749
2008	23675.8889979272
2009	23212.1562378596
2010	25818.5116587304
2011	27217.5726595239
2012	34104.1565534143
2013	31689.9306519417
2014	18693.3370745217
2015	20628.7449297424
2016	23001.5810553319
2017	31043.8548586928
2018	30548.5465740848