The index can go as high as 100, if all respondents say the economy is strong and improving, or as low as negative-100, if everybody says things are bad and getting worse. Its lowest-ever score was 65 below zero, back in late 2008. Its highest ever came this this morning.
Today, 52% of Americans think things are getting worse, and only 15% describe conditions as "excellent" or "good." Ladies and gentlemen: all-time record economic optimism.

This article available online at:
http://www.theatlantic.com/business/archive/2012/05/economic-confidence-hits-four-year-high-of-negative-16/257519/