WASHINGTON (MarketWatch) - The U.S. economy gained 200,000 jobs in December and the unemployment rate fell to 8.5%, the Labor Department said Friday. Economists surveyed by MarketWatch had forecast the U.S. would add 150,000 jobs last month, with the jobless rate edging up to 8.7% from an initially reported 8.6% in November. Subtracting another decline in government jobs, the private sector boosted payrolls by 212,000. Average hourly earnings rose 0.2% last month to $23.24 and hours worked edged up to 34.4. Job gains for November and October were little changed. The U.S. created 1.64 million jobs in 2011.