Italy\'s borrowing costs fell on Wednesday in an auction of six-month bonds that raised 7.5 billion euros ($9.7 billion), the latest sale showing a trend of increased investor confidence in the country. The bonds were sold at a rate of 0.919 percent compared to 1.347 percent in the last comparable auction on October 29. Demand was also higher than last month, the Bank of Italy said. Italy on Tuesday raised 4.5 billion euros in medium and long-term bonds and is wants to raise 6.0 billion euros in medium and long-term bonds on Thursday.