The number of homes on the market surged by 8.65 percent from May to June, but still remained slightly below levels seen a year ago, realtor.com reports.Home sales likely crested sometime in July, but the market should hold strong into August and September, realtor.com Chief Economist Jonathan Smoke told Inman News.  June 2014 Change from a year agoChange from May 2014Number of listings 1.9 million -0.92% 8.65%Median age of inventory 76 days -5.00% -2.56%Median list price $215,000 7.55% 0.05%Source: realtor.comIn recent years, home sales had started off strong in the first part of the year but had weakened in the third quarter, Smoke said. The strong June realtor.com stats indicate a hardier market, less susceptible to the volatili...