Standard&Poor's Ratings Services assigned its 'AAA' rating, and stable outlook, to Plano, Texas' series 2004 GO refunding and improvement bonds. The rating reflects the city's: Diversified economic base, including ongoing additional investment; Significantly above-average wealth and income levels; Conservative financial and debt management policies, which are reflected in monthly expenditure and revenue reports; Strong general fund reserve levels, which are augmented by additional reserves in various funds, providing significant revenue-raising flexibility; and Manageable debt levels, enhanced by rapid principal amortization with an increasing percent done as pay-as-you-go financing, and limited future debt needs. The city's full faith and credit pledge secures the bonds. Plano's estimated fiscal 2005 population of 245,000 indicates continued growth but at a reduced rate