Fourth-quarter net income at West End-based Caterpillar Financial Services jumped by almost two-thirds from a year before to $70 million. New financings rose 11 percent and delinquencies fell as the global economy continues to claw its way toward sustained health. Still, it's worthy pointing out that full-year 2010 revenues at the equipment finance company were 15 percent below 2007's numbers and profits were off by more than 40 percent.