sentences:  The municipal ordinances she sponsored in 1993 and 1999 for affordable housing increased city expenditures on low and moderate income housing by 50 percent.In 2007, she pushed for increases in the existing Affordable Requirements Ordinance.This mandates that housing developers using land bought at a discount from the city, must reserve at least 10 percent of their housing units as "affordable", or to contribute money to an affordable-housing fund that would be equivalent to increasing the percentage to 15 percent.