Year	current US$
1970	0
1971	0
1972	13600000.102073
1973	16389999.7137487
1974	25830000.2906471
1975	38199999.736622
1976	37330000.1882017
1977	36780000.2600998
1978	40540000.7907301
1979	42680000.143125705
1980	45799999.9895692
1981	45229999.9967217
1982	46160000.4732609
1983	45340000.0464171
1984	40110000.051558
1985	39379999.704659
1986	52850000.996142596
1987	50470000.1962483
1988	55680000.061169304
1989	57540000.5374104
1990	64050000.902265295
1991	49190000.3571063
1992	55429999.9289215
1993	60950000.5412847
1994	65459999.691695005
1995	84080000.9556115
1996	87470000.40486461
1997	90620000.468567
1998	81520001.0240078
1999	83370000.9863824
2000	70719999.0451336
2001	68690000.1354516
2002	65259999.50803821
2003	86740000.391379
2004	108609999.615699
2005	137049999.488518
2006	146750000.217929
2007	173709999.639541
2008	200549996.599555
2009	164600001.22711098
2010	205019999.874756
2011	253919997.289777
2012	278909999.320284
2013	274120001.262054
2014	326990003.319457
2015	285329999.32766
2016	282340005.35495603
2017	279800002.18749
2018	396579999.115318
2019	379499997.109175
2020	363890003.845096
2021	496290006.250143
2022	143419998.7631291