miles	91,549	82,549	73,549	64,549	year
						0.271739	0.217949	0.319298
	year	91	92	93	94	0.185455	0.168712	0.262467
	Poor	no value	no value	no value	no value	0.181818	0.125641	0.23918
	Fair	920	1170	1425	1880	condition
	Good	1375	1630	1905	2405	0.494565	0.393162	0.336842	0.279255
	Excellent	1650	1950	2195	2720	0.2	0.196319	0.152231	0.130977
		1991	1991	1991	1991		1992	1992	1992	1992
	miles	91,549	82,549	73,549	64,549		91,549	82,549	73,549	64,549
	Poor	0	0	0	0		0	0	0	0
	Fair	920	1045	1145	1220		1020	1170	1245	1320
	Good	1375	1500	1600	1675		1475	1630	1700	1775
	Excellent	1650	1775	1875	1950		1750	1950	1975	2050
	Regardless of miles, improving the condition from Fair to Good,
	is worth approximately $400.
	Improving from Good to Excellent is worth approximately $275.
	Every 9,000 additional miles costs (or is worth) approximately $75-$150.