Year	current US$
1981	4015555.5570428
1982	3329259.26049232
1983	3147777.77894362
1984	5650740.74283361
1985	7414814.81756104
1986	10220000
1987	10560000
1988	10323456.9579201
1989	16393141.6406024
1990	16284226.5723919
1991	16634304.3098886
1992	26243750.0515627
1993	29420603.3770391
1994	31821472.8986588
1995	33471864.7060922
1996	32731150.8817541
1997	36069846.1314278
1998	46798422.6218554
1999	49575620.0636571
2000	45199214.9459163
2001	56429365.4519954
2002	65752273.1110241
2003	64802098.3125229
2004	78469063.538565
2005	71611722.8579595
2006	88697803.0782002
2007	95790629.9072359
2008	110411464.623505
2009	136408154.171006
2010	168859133.54094
2011	244261262.258249
2012	263485328.014723
2013	301952572.319684
2014	327252698.805102
2015	288394872.297999
2016	320542568.31894
2017	365098328.465168
2018	363216830.554272
2019	362798006.089721
2020	373502419.388162
2021	337532614.294912
2022	293979512.215724
2023	286074596.982653