Year	current US$
1991	14242433.707093105
1992	14550304.038637578
1993	12676418.723446982
1994	16331077.676509742
1995	18449355.51506459
1996	22218316.931110665
1997	21691995.728808425
1998	18173234.034782566
1999	20520905.672654014
2000	23299567.649733987
2001	29750420.115765233
2002	28132431.054071154
2003	27925853.368574765
2004	31911561.097363792
2005	34327520.74786561
2006	33369051.96648697
2007	39697087.577748425
2008	31919761.699029062
2009	27053149.293430608
2010	32366030.563780013
2011	51258336.02720209
2012	66709520.9630602
2013	58328342.25469083
2014	57217055.089507125
2015	63995311.18502785
2016	55784418.98651468
2017	66035376.77107191
2018	63177399.53647609
2019	65919333.07477755
2020	75353026.42538011
2021	93685216.67267084
2022	108242740.48300812
