Americans' personal income rose at the fastest rate since October when it increased 0.8 percent or $29.6 billion in March to an annual rate of $3.92 trillion, the Commerce Department said Wednesday. The increase, in current dollars, matched a 0.8 percent hike in December and was the steepest since a 1.9 percent rise in October, according to the department's Census Bureau. Personal income rose 0.6 percent in February and 0.1 percent in January. In current dollars, personal spending increased 0.7 percent or $22.1 billion to an annual rate of $3.19 billion in March. That followed an expenditure rise of 0.8 percent in February, the department said. Personal income rose $22.2 billion and personal spending increased $24.8 billion in February, according to revised information.