The 'AA-' rating on Sioux City, Iowa's GO bonds reflects the city's: Regional economy with strong links to the agricultural sector, Average income levels, Sound financial position, and Moderate debt burden. Offsetting credit factors include: High, but manageable, debt service carrying charges; and Sales tax revenues to pay debt service are subject to economic volatility. Sioux City is a regional trade, service, and health care center for west-central Iowa and portions of South Dakota and Nebraska. Taxable valuation has increased a steady annual average of 4.5% since 1998; it has been supported in recent years by released tax increment valuations. Total 2000 market value was a substantial $2.9 billion, or $33,920 per capita. Good financial performance continues with surplus operations