Single — family data collection began monthly in 1968, while condo data collection began quarterly in 1981; the series were combined in 1999 when monthly collection of condo data began. (nar.realtor)
Single - family data collection began monthly in 1968, while condo data collection began quarterly in 1981; the series were combined in 1999 when monthly collection of condo data began. (nar.realtor)
Monthly collections ship in consecutive order and are not subject to exceptions. (stonewallkitchen.com)