The private mortgage insurance industry ended last year on a sour note, but the MIs posted fairly solid results for 2005 despite continuing challenges in the marketplace. The seven private MIs wrote $267.54 billion of new primary insurance in 2005, a modest increase of 1.4 percent from the year before. With overall mortgage originations rising 6.8 percent last year, that meant the MI share of new business actually declined slightly, from 9.0 percent in 2004… [Three data tables included]