NEW YORK (AP) — Even as the income gap widens, the wealthiest Americans are giving a smaller share of their income to charity, while poor and middle-income people are donating a larger share, according to an extensive analysis of IRS data conducted by the Chronicle of Philanthropy. The Chronicle, a leading source of news coverage of the nonprofit world, said in a report being released Monday that Americans who earned $200,000 or more reduced the share of their income they gave to charity by 4.6 percent from 2006 to 2012. According to the report, changes in giving patterns were most pronounced in major cities, where the percentage of income that residents donated dropped markedly between 2006 and 2012. The Chronicle's editor, Stacy Palmer, noted that wealthy donors, overall, were more oriented toward support of the arts and higher education than lower-income donors, and less oriented toward support of social-service charities. The Chronicle said that dip could have serious implications, given the increasing demand for social services as newcomers stream in to take advantage of the state's oil boom. The report detailed how Jacksonville donors had rallied behind a campaign to improve the region's public schools via a Quality Education for All fund launched in 2005 with a goal of raising $50 million.