Year	current US$
1991	32207786.361769006
1992	32207786.361769006
1993	36124037.114353016
1994	33513203.27929698
1995	28707918.5915
1996	30525374.04133399
1997	31431288.36772202
1998	61354595.12381801
1999	65045773.99406999
2000	69035173.1084114
2001	73626639.50799301
2002	78887694.75751299
2003	87260368.78027901
2004	86956521.73913102
2005	94738382.070773
2006	96831550.576466
2007	92386380.90040001
2008	130839911.99689397
2009	141935955.79588303
2010	148817528.59819603
2011	151946027.762617
2012	156031082.42695
2013	599484585.389459
2014	606084818.3388569
2015	621974893.231526
2016	654891656.0226419
2017	669380658.447792
2018	714282498.9731131
2019	791380872.26608
2020	625536524.477505
2021	694509540.234414
2022	753281779.6786711