Year	constant 2010 US$
1991	17735.8589398426
1992	18362.7463290188
1993	23602.8290169965
1994	24813.2644719562
1995	29178.7568307559
1996	33788.8395524654
1997	35424.365418395
1998	36256.3301290113
1999	39549.4373089982
2000	38295.9195133325
2001	41297.1039508608
2002	42917.8498462373
2003	42701.0571168319
2004	43581.3396366778
2005	41852.5155516214
2006	44112.2950624329
2007	48866.321343859
2008	42227.0052901121
2009	41444.8957520274
2010	58960.0527022462
2011	53163.6660379935
2012	55123.2427700182
2013	53701.3883556004
2014	63772.8207952512
2015	54768.6765684682
2016	55320.7103729385
2017	71387.0602848653
2018	61666.9295380328