Year	current US$
1975	1600000.02384186
1976	2180000.0667572
1977	19999.9995529652
1978	9999.99977648258
1991	250000
1992	219999.998807907
1993	1149999.97615814
1994	540000.021457672
1995	219999.998807907
1996	949999.988079071
1997	460000.00834465
1998	360000.01430511504
1999	330000.013113022
2000	310000.002384186
2003	29999.999329447703
2010	79999.9982118607
2013	592739.999294281
2015	1030884.62352753
2018	809303.045272827
2019	1372409.4629287699