Year	constant 2015 US$
1991	33318009.53163341
1992	38702956.584475845
1993	40863260.46080638
1994	49575661.261670135
1995	55333443.66443729
1996	63552066.155517355
1997	63746951.346941374
1998	73349444.03567785
1999	70136948.48274645
2000	74743359.94474217
2001	60063185.75387723
2002	67149975.32743497
2003	64885652.45617746
2004	64752042.683326244
2005	68747823.00156802
2006	67133725.50379334
2007	67514889.014107
2008	75517494.49976172
2009	74938843.8138793
2010	82200922.1971122
2011	85699170.14414571
2012	83692899.50322226
2013	87375294.67772293
2014	89068424.67689565
2015	86476741.81356524
2016	93017995.12513341
2017	94516920.11125869
2018	100791552.29781462
2019	103516939.81099637
2020	83158526.47089542
2021	95032925.87970865
2022	98239393.9388596
2023	109370971.24573286