Year	current US$
1980	5837037.03703704
1981	7192592.59259259
1982	12637037.037037
1983	10822222.2222222
1984	9170370.37037037
1985	10318518.5185185
1986	14500000.00000003
1987	18018518.51851852
1988	22229629.62962963
1989	27685185.18518517
1990	33996296.296296276
1991	33651851.85185183
1992	38181481.48148151
1993	44318518.5185185
1994	42581481.48148152
1995	51366666.6666667
1996	57933333.33333338
1997	61422222.222222224
1998	57729629.629629605
1999	66000000.00000003
2000	100683895.41523752
2001	97641520.42514019
2002	98280343.95178048
2003	105093914.0883511
2004	112152400.38547742
2005	133755479.22541039
2006	155083015.62031358
2007	168980077.3652629
2008	190091821.02630544
2009	171661713.09733894
2010	177938607.79719386
2011	185720667.7881191
2012	184263259.0756966
2013	204711243.8619664
2014	214083590.23909882
2015	216100880.5212706
2016	221022666.666704
2017	209695724.50038895
2018	227329479.47531798
2019	251077878.59790266
2020	154650289.23524445
2021	149868053.91797712
2022	228550966.66666675
2023	250545282.22222236