Fresh off the heels of a historic year of record sales in 2014, the Hawaii apartment, or multifamily, real estate market has finally begun to cool off this year, according to a new report. The multifamily market kicked off 2015 posting total market sales of more than $31 million with 166 units sold, the Honolulu-based Apartment Advisors first quarter report said. However, total sales were down 21 percent and total units sold were down 15 percent compared to the same period a year ago. “While…