Year	current US$
1991	140000.000596046
1992	759999.990463257
1993	449999.988079071
1994	1570000.05245209
1995	2200000.04768372
1996	1710000.03814697
1997	1320000.05245209
1998	1039999.96185303
1999	1100000.02384186
2000	1240000.0095367401
2001	870000.004768372
2002	430000.00715255697
2003	689999.997615814
2004	1220000.02861023
2005	1070000.05245209
2006	4210000.03814697
2007	3430000.0667572
2008	4050000.1907348596
2009	2460000.03814697
2010	3069999.9332428
2011	2990000.00953674
2012	649999.976158142
2013	699999.988079071
2014	670000.016689301
2015	579999.983310699
2016	610000.014305115
2017	670000.016689301
2018	709999.978542328
2019	730000.019073486
2020	1129999.99523163
2021	1419999.95708466
2022	1059999.9427795399