The Tampa Bay area ranks seventh riskiest nationally for home price declines, according to PMI Group. The mortgage insurer said the likelihood is 99.2 percent that Tampa-St. Petersburg-Clearwater will have lower home prices two years from now. Miami, Fort Lauderdale, West Palm Beach, Orlando and Jacksonville were also among the top 10 markets in jeopardy. California and Las Vegas owned the remaining top spots. The biggest factors in PMI's forecast were rising unemployment and foreclosures. The company said price declines are a growing risk in 369 of 381 markets it tracks. A few cities appear immune. PMI suggested housing values would rise in places like Dallas, Houston and Pittsburgh.