NY -- Standard&Poor's CreditWire 1/11/1999 – Standard&Poor's today assigned its single-'A'-minus rating to New York City's $57.73 million taxable GO bonds series 1999G due Aug. 1, 2001 and $268 million GO bonds series 1999F due Aug. 1, 2022. The bonds are scheduled to sell Jan. 12, 1998. In addition, Standard&Poor's affirmed its ratings on the city's outstanding debt (see list below). The rating reflects: -- Improved financial performance. The city has produced recent budget surpluses, demonstrated willingness to curtail expenditure growth, and reduced the out-year gaps. In addition, the city has started to experience an increase in property tax revenues and has limited its use of nonrecurring revenues. The rating anticipates that the city