Sallie Mae didn’t see a major increase in its securitization volume in 2005, but the student loan conduit still managed to end the year as the top issuer in a rapidly expanding non-mortgage ABS market, according to a new Inside MBS & ABS ranking. Sallie Mae issued $27.00 billion in new ABS during 2005, a relatively modest increase of 3.8 percent from its volume in the previous year. With the overall market growing 24.0…