Year	current US$
1988	29999.999329447703
1991	100000.00149011599
1992	140000.000596046
1994	180000.00715255702
1995	460000.00834465
1996	330000.013113022
1997	39999.9991059303
1998	19999.9995529652
1999	79999.9982118607
2000	39999.9991059303
2001	140000.000596046
2002	460000.00834465
2003	680000.007152557
2004	2500000
2005	1399999.97615814
2006	2400000.09536743
2007	2849999.90463257
2008	2579999.92370605
2009	2700000.04768372
2010	3920000.07629395
2011	7510000.228881841
2012	6219999.79019165
2013	5349999.90463257
2014	4050000.1907348596
2015	5809999.94277954
2016	5349999.90463257
2017	6909999.84741211
2018	5340000.15258789
2019	6019999.98092651
2020	5070000.17166138
2021	4650000.09536743
2022	6840000.15258789