“Americans’ concerns about the U.S. economy are, by one measure, the lowest in 18 years. Fifteen percent of Americans mention an economic issue when asked to name the most important problem facing the country. The percentage mentioning the economy has been lower only once in Gallup’s 25-year trend — 13% in 1999 during the dot-com boom. It was similar, at 16%, in late 2006 and early 2007, before the recession and during the Iraq War.”