Year	constant 2010 US$
1989	24758.2659182464
1990	23924.493809333
1991	21929.1669184503
1992	21621.788316243
1993	20708.0182746955
1994	20736.901282096
1995	25069.2758332067
1996	27972.9707438256
1997	27606.3765729179
1998	29548.5841411153
1999	32092.4278178097
2000	33259.9287297331
2001	31756.2000321176
2002	34608.4758937284
2003	33259.7687939423
2004	31599.2207653856
2005	32629.4206909823
2006	31138.6575898175
2007	31867.5534012585
2008	30331.3213750211
2009	26968.7650094644
2010	25824.3779829236
2011	25183.3017467382
2012	26834.4039003635
2013	26167.9428399753
2014	25772.5976823799
2015	25689.4364157912
2016	24641.2104524591
2017	24528.7894159492