Despite a hefty 33 percent slide in new Ginnie Mae mortgage-backed security issuance, 2000 was not a bad year for servicers. Thanks to a generally refi-less mortgage market environment, most of the top Ginnie Mae servicers posted healthy gains last year. According to a year-end Inside Mortgage Finance ranking, all but one of the top five Ginnie Mae servicers witnessed double-digit growth in 2000. Meanwhile, the top 50 Ginnie Mae servicers as a group saw