DETROIT (WKZO) -- Sales continued to rise for Chrysler LLC, General Motors and Ford in December and also in 2012.  Chrysler officials reported a ten-percent increase in sales for December and new vehicle purchases jumped 21 percent for the year.  Sales at GM were up 4.9-percent over the same month last year and up 3.7-percent for 2012.  Ford sales rose 1.9-percent in December and car sales for the Dearborn-based automaker increased 4.7-percent over the entire year.