Year	current US$
1990	5210567.56596689
1991	5251793.93873813
1992	4822538.80319027
1993	3505505.87511535
1994	4978853.1754146
1995	5503370.84106419
1996	5889401.87178275
1997	7450245.21223692
1998	6676468.45032506
1999	7455423.15311675
2000	8538341.17867679
2001	10285625.6853647
2002	13502350.8308445
2003	15759662.1598237
2004	20959313.8149097
2005	21172284.6829122
2006	24523788.83141
2007	30131299.2091445
2008	33278797.4585925
2009	35626544.2566396
2010	37437496.1630709
2011	38180334.5906618
2012	44119467.5937992
2013	46871811.3137614
2014	51516257.1807586
2015	68502454.3334574
2016	62126989.5953925
2017	56873980.3739436
2018	60727053.8786704
2019	69324167.2638517
2020	73647038.4881924
2021	80651255.2075574