The subprime market shrugged off a sluggish performance on the origination front to reach an important milestone in the first quarter of 2005 – $1 trillion in outstanding servicing. According to a new ranking and analysis by Inside B&C Lending, an estimated $1.01 trillion in subprime mortgages were outstanding at the end of March – a 3.8 percent increase from the end of 2004. That performance marked a sharp slowdown in the industry’s rate…