united parcel service , inc . and subsidiaries notes to consolidated financial statements 2014 ( continued ) ups class b common stock on the first or the last day of each quarterly period . employees purchased 1.8 , 1.9 , and 2.0 million shares at average prices of $ 64.20 , $ 66.64 , and $ 64.54 per share during 2007 , 2006 , and 2005 , respectively