Year	current US$
1977	639999.985694885
1980	239999.994635582
1981	70000.0002980232
1982	100000.00149011599
1983	490000.009536743
1984	259999.990463257
1985	469999.998807907
1986	629999.995231628
1987	850000.023841858
1988	790000.021457672
1989	930000.007152557
1990	1289999.96185303
1991	1190000.0572204601
1992	720000.028610229
1993	1100000.02384186
1994	970000.028610229
1995	1029999.97138977
1996	1659999.9666214
1997	2160000.08583069
1998	3569999.9332428
1999	1360000.01430511
2000	980000.019073486
2001	2339999.91416931
2002	2869999.8855590797
2003	3109999.89509583
2004	2210000.03814697
2005	1970000.02861023
2006	2230000.01907349
2007	1929999.94754791
2008	2259999.99046326
2009	2690000.05722046
2010	3279999.97138977
2011	3079999.92370605
2012	3381104.94613647
2013	3781240.94009399
2014	3256081.10427856
2015	3636995.31555176
2016	3216452.12173462
2017	2955207.1094512898
2018	3230570.07789612
2019	3563585.75820923
2020	3983269.9298858596
2021	3715388.7748718304
2022	4806449.89013672