Year	current US$
1989	59999.998658895565
1990	79999.99821186066
1991	2759999.994188546
1992	3400000.03017485
1993	3269999.969750642
1994	8529999.896883972
1995	11899999.694898723
1996	10020000.036805868
1997	4779999.921098349
1998	2490000.0281631937
1999	1099999.9865889542
2000	11039999.663829809
2001	2409999.949857595
2002	3179999.992251394
2003	2469999.9224394523
2004	5249999.972060326
2005	18210000.034421697
2006	34420000.3053993
2007	41099999.64386224
2008	51610000.27135011
2009	57179999.60295858
2010	74559998.84381895
2011	91340000.39286904
2012	145479999.02442095
2013	198100000.5137175
2014	242619993.73137954
2015	250390003.82274395
2016	273619997.78635806
2017	250070001.11043444
2018	301140003.80597997
2019	279080001.22010714