Despite a late-year push, the subprime securitization market closed 2000 lagging behind even the tepid pace it set in 1999, a new Inside B&C Lending ranking of the top issuers reveals. But that doesn’t necessarily mean that the past 12 months have been unremarkable. Overall, $55.94 billion in securities backed by subprime mortgages were issued during 2000, a down year for subprime originations. That was the lowest level since 1996, when a paltry $38.03 billion