Standard&Poor's Ratings Services assigned its 'AA+' rating to Minnesota's $35 million 911 revenue bond series 2006, reflecting: A stable statewide fee base that has experienced steady growth over time; The high essentiality of the emergency 911 system and a demonstrated history of legislative support for the program; High coverage of maximum annual debt service (MADS) on all bonds secured by the 911 fee, with fiscal 2007 projected revenues of $46.9 million covering MADS by 8.57X; Limited additional debt planned and authorized, which should ensure high debt service coverage levels well above the additional bonds test requirement; and Rapid amortization of debt payable from pledged revenue with the final bond maturity in 2018. Revenues generated from a 911 fee