There’s no doubt about it: 2005 was a banner year for the subprime market as borrowers looked for ways to tap into a treasure trove of accumulated equity. But a late-year slowdown suggests that the business could prove decidedly more difficult in 2006. Inside B&C Lending estimates that a record $665.0 billion in new subprime mortgages were originated last year, a 25.5 percent jump from 2004’s $530.0 billion in total production. The origination figure… [Two data tables included]