The city also has a growing minority population: for example, in the three-year period from 2006 to 2008, the U.S. Census Bureau estimated that 4.9% of the Cedar Rapids population identified as African Americans, up from 3.7% in the 2000 census. Cedar Rapids has played an important role in Muslim culture in the United States. The National Muslim Cemetery, on of land donated by Haj. Yahya William Aossey in 1948, is said to be the first exclusively Muslim cemetery in North America. Graves in the cemetery face Mecca. The Mother Mosque of America, dedicated on June 16, 1934, is the longest standing mosque in North America. In 1972, another mosque was built and the original mosque was sold and fell into disrepair before being purchased in 1990 by the Islamic Council of Iowa and renovated. It is on the National Register of Historic Places. The Iowa flood of 2008 extensively damaged the basement, destroying many historic documents. Muslim presence in the area dates to 1895 when the first immigrants arrived from the Beqaa Valley in today's Lebanon and Syria. Islamic Services of America (I.S.A.) was established in Cedar Rapids in 1975 and provides Halal Certification and supervision throughout the world. There are currently 9 active Roman Catholic Churches in Cedar Rapids, of a total of 13 in Linn County. These parishes are part of the Archdiocese of Dubuque. Mass is offered 7 days a week. There are numerous Christian churches of many denominations, such as Baptist, Lutheran, Methodist and several others. There are also Greek Orthodox and Russian Orthodox churches. There is currently one Jewish synagogue in Cedar Rapids. Cedar Rapids is one of the largest cities in the world for corn processing. The grain processing industry is Cedar Rapids' most important sector, directly providing 4,000 jobs that pay on average $85,000, and also providing 8,000 indirectly. Fortune 500 company Collins Aerospace and trucking company CRST are based in Cedar Rapids, and Aegon has its United States headquarters there. A large Quaker Oats mill, one of the four that merged in 1901 to form Quaker Oats, dominates the north side of downtown. Other large companies that have facilities in Cedar Rapids include Archer Daniels Midland, Cargill, General Mills, Toyota Financial Services and Nordstrom. Newspaperarchive, based in Cedar Rapids, is the largest newspaper archive in North America with a repository of more than 150 million pages assembled over 250 years; it was taken offline for two days by the 2008 flood.