Bloomberg Businessweek, previously known as BusinessWeek, is an American weekly business magazine published fifty times a year. Since 2009, the magazine is owned by New York City-based Bloomberg L.P. The magazine debuted in New York City in September 1929. Bloomberg Businessweek business magazines are located in the Bloomberg Tower, 731 Lexington Avenue, Manhattan in New York City and market magazines are located in the Citigroup Center, 153 East 53rd Street between Lexington and Third Avenue, Manhattan in New York City. Businessweek was first published based in New York City in September 1929, weeks before the stock market crash of 1929. The magazine provided information and opinions on what was happening in the business world at the time. Early sections of the magazine included marketing, labor, finance, management and Washington Outlook, which made Businessweek one of the first publications to cover national political issues that directly impacted the business world. Businessweek was originally published to be a resource for business managers. However, in the 1970s, the magazine shifted its strategy and added consumers outside the business world. , the magazine was carrying more advertising pages annually than any other magazine in the United States. Businessweek began publishing its annual rankings of United States business school MBA programs in 1988. Stephen B. Shepard served as editor-in-chief from 1984 until 2005 when he was chosen to be the founding dean of the CUNY Graduate School of Journalism. Under Shepard, Businessweeks readership grew to more than six million in the late 1980s. He was succeeded by Stephen J. Adler of The Wall Street Journal. In 2006, Businessweek started publishing annual rankings of undergraduate business programs in addition to its MBA program listing. Businessweek suffered a decline in circulation during the late-2000s recession as advertising revenues fell one-third by the start of 2009 and the magazine's circulation fell to 936,000.