** CORRECTS TO DENZEL WASHINGTON ** Actor Denzel Washington, left, and New York City Mayor Michael Bloomberg shake hands during the arrivals at the Boys & Girls Clubs of America annual president's dinner Wednesday, June 9, 2004, in New York. (AP Photo/Tina Fineberg)

**FILE PHOTO** (NYT52) NEW YORK -- June 19, 2007 -- BLOOMBERG -- Mayor Michael R. Bloomberg delivers his State of the City address in New York in this Jan. 17, 2007 file photo. Bloomberg announced on Tuesday, June 19, 2007, that he was quitting the Republican Party and had changed his affiliation to independent. (Richard Perry/The New York Times)

New York Mayor Michael Bloomberg points a reporter for a question during a press conference after the New York City 2012 presentation at the 117th International Olympic Committee session in Singapore Wednesday, July 6, 2005. The winner of the most glamorous and hotly contested Olympic bid race in history will be decided later in the day. (AP Photo/Vincent Thian)

*FILE (NYT17) NEW YORK -- March 18, 2005 -- Adv. for Sunday, March 20 -- BLOOMBERG-OUTLOOK-2 -- Mayor Michael Bloomberg at the railing in the Rotunda in City Hall on Dec. 18, 2003. Bloomberg the mayor is gearing up for a re-election bid. Bloomberg the data terminal is selling like hotcakes. Bloomberg the newsroom feels oppressed. And Bloomberg the company has been dogged by rumors of a possible sale. (Chester Higgins Jr./The New York Times)

In this image taken from television, New York City Mayor Michael Bloomberg makes remarks concerning the heightened state of alert in the New York City Subway system Thursday Oct. 6, 2005 in New York. New York City Police Commissioner Raymond Kelly looks on at right. (AP Photo/APTN)

Mayor Michael Bloomberg at the Fashion Group International annual Night of the Stars awards ceremony in New York, Oct. 22, 2013. Bloomberg presented a corporate leadership award to Lew Frankfort, the chairman of Coach.(Karsten Moran/The New York Times)

Michael Bloomberg, millionaire and founder of the New York Bloomberg financial markets company, is shown circa 1992. (AP Photo)

New York Mayor Michael Bloomberg speak during a press conference at Lincoln Center in New York, Tuesday April 13, 2004. Mayor Bloomberg announced plans for a $325 million upgrade of Lincoln Center facilities, including a block-long section of 65th Street. (AP Photo/Bebeto Matthews)

New York City Mayor Michael Bloomberg (L) and Spider-Man pose Novermber 17, 2010 in New York after unveiling 'Spider-Man, You're Hired' a special print and digital comic book promoting New York City's free job placement resources to help people in the job market. The comic book is available free from Marvel Comic's app on iTunes. Picture by Dennis Van Tine/LFI

New York City Mayor Michael Bloomberg speaks to supporters after he was re-elected Tuesday, Nov. 8, 2005, in New York. (AP Photo/Julie Jacobson)

(NYT10) NEW YORK -- Oct. 18, 2001 -- Adv. for Sun., Oct. 21 -- BLOOMBERG-COX -- Michael Bloomberg and Mark Green may be campaigning for the mayor of New York, but watching television, one forgets there's anyone but Bloomberg in the race. One political advertisement touts Bloomberg's business acumen, another his humble origins. Most carry the tag line: "A Leader. Not a Politician.'' Bloomberg was in charge of equity trading at Salomon Brothers in Manhattan in 1975. (Edward Hausner/The New York Times)

New York City Mayor Michael Bloomberg answers a reporter's question after presenting his $46.9 billion budget for the 2005 fiscal year, Monday, April 26, 2004, in the historic Blue Room at New York's City Hall. (AP Photo/Marilynn K. Yee, Pool)

New York Mayor Michael Bloomberg, left, speaks before helping to plant the Survivor Tree at the World Trade Center site, Wednesday, Dec. 22, 2010 in New York. At right is Christopher Ward, the Executive Director of the Port Authority of New York and New Jersey. The tree was severely damaged in the attacks of Sept. 11, 2001. It was transplanted to a city park following the attacks and was returned to the site Wednesday where it will be part of the National September 11 Memorial and Museum. (AP Photo/Mark Lennihan)

Michael Bloomberg, millionaire and founder of the New York Bloomberg financial markets company, is shown circa 1992. (AP Photo)

New York City mayor Michael Bloomberg talks to some unindentified people at half-time of an Athens 2004 Olympic Games basketball preliminary round match between the United States and Australia at Hellinikon Indoor Arena in Athens, Thursday Aug. 19, 2004. (AP Photo/Dusan Vranic)

(NYT47) NEW YORK -- OCT. 5, 2004 -- NY-COUNTRY-MUSIC-2 -- New York City Mayor Michael R. Bloomberg looks on at City Hall as he was set to announce, Tuesday, October 5, 2004 that the 2005 Country Music Association (CMA) awards will be held in New York City. The awards will be broadcast live from Madison Square Garden on November 15, 2005 and will be the first time ever to be held outside of Nashville. (Don Hogan Charles/The New York Times)

Michael Bloomberg, millionaire and founder of the New York Bloomberg financial markets company, is photographed circa 1992-93. (AP Photo)

(NYT20) NEW YORK -- June 15, 2002 -- NY-BLOOMBERG -- Last week, Mayor Michael R. Bloomberg, left, completed some unfinished business that had been dear to the heart of his predecessor, Rudolph W. Giuliani. He celebrated legislation loudly championed by Giuliani that gives the mayor more control of the public school system. And he agreed on a teachers' contract that exchanged pay raises for a longer workweek. By continuing Giuliani's work, Bloomberg appeared to be carrying out a pledge he made during the campaign to continue Giuliani's legacy. Giuliani endorsing Bloomberg at City Hall last year. (Suzanne DeChillo/The New York Times)

(NYT42) NEW YORK -- Oct. 7, 2003 -- NY-MAYOR-BOSOX -- The baseball cap worn by Mayor Michael R. Bloomberg at a news conference in August 2002 cited the last year the Boston Red Sox won the World Series. "I'm rooting for the Yankees, make no mistake about that,'' the mayor declared on Tuesday, Oct. 7, 2003. "This team's going to go all the way.'' (Nancy Siesel/The New York Times)

(NYT59) NEW YORK -- Dec. 14, 2004 -- NY-BLOOMBERG -- New York City Mayor Michael Bloomberg helps Bettie Cohen light a menorah as they celebrated the last night of Hanukkah at The Jewish Museum in Manhattan, Tuesday evening, Dec. 14, 2004. As he embarks on his second mayoral campaign, Bloomberg is both remarkably the same and altogether different from 2001, when he played the role of the unlikely billionaire candidate awkwardly lurching through his first political race. (Suzanne DeChillo/The New York Times)