OLYMPIA, WA - Public-service minded Washington residents helped the state rank ninth in the nation for volunteering last year. According to a national volunteering report, nearly 2 million Washingtonians volunteered more than 250 million hours in 2012. Seattle is ranked fourth among the 51st largest metropolitan areas, and tops for young adult volunteering. The volunteering report is based on statistics gathered by the federal government. It shows one in four adults volunteered through an organization in 2012. Nationally, more than 64 million Americans volunteered nearly 8 billion hours last year.