Year	current US$
1977	2439999.9864399424
1980	7179999.98666346
1981	5690000.003203746
1982	5660000.041127203
1983	5579999.957233668
1984	4239999.959245323
1985	5189999.960362911
1986	4120000.034570693
1987	3980000.0321120005
1988	4209999.984130261
1989	5459999.999031424
1990	7709999.976679682
1991	9420000.046491623
1992	9179999.966174364
1993	6140000.000596046
1994	10899999.957531692
1995	13519999.90455806
1996	12120000.00104308
1997	12579999.990761282
1998	8650000.039488073
1999	8289999.973028893
2000	7549999.956041573
2001	8600000.036880376
2002	11929999.794811012
2003	9950000.010430813
2004	12420000.120997425
2005	12769999.878481034
2006	13620000.103488557
2007	15149999.937042587
2008	19639999.911189068
2009	19520000.029355302
2010	18689999.783411607
2011	18810000.138357267
2012	21555863.933055677
2013	17156130.159972224
2014	15149810.880422598
2015	13566082.827746859
2016	10050470.083951946
2017	8600334.599614143
2018	8646309.964358803
2019	16107296.50408029
2020	16366339.787840819
2021	16874684.33380126
2022	19270800.32229424