EMBARGOED UNTIL 12:01 AM, WEDNESDAY, JAN. 1, 2014 - FILE - This Aug. 12, 2013 file photo shows New York City Mayor Michael Bloomberg speaking in New York. Bloomberg made a $350 million pledge to Johns Hopkins University in 2013. Philanthropy in 2013 made a comeback in large donations with the nation’s wealthiest donors giving more than $3.4 billion to charity, according to a new tally of the top 10 gifts of 2013 by the Chronicle of Philanthropy. (AP Photo/Seth Wenig, File)