The Bronx had the highest percentage of vacancies of more than five years, with 43percentt.
Companies start up, fail, downsize, upsize and fill the vacancies of those who left.
Manhattan had the greatest number of vacancies of more than a year, with 1,749.
Some buildings are facing vacancies of 50percentt or more, Mr. Campoli said.
But a separate report from the Commerce Department showed that vacancies of for-sale homes were still at high levels.
These wait times, documented in a recent survey by the Children's Hospital Association, are a result of vacancies of 12 months or longer among key pediatric specialties.
In a further sign of continuity, Mr. Obama named two people from within his administration to fill the vacancies of Christina D. Romer, the former chairman of the Council of Economic Advisers, and Peter R. Orszag, the first budget director.
In Zhongshan, many factories are operating with vacancies of 15 to 20 percent, compelling some bosses to cruise the streets in their BMWs and Mercedeses in a desperate hiring quest during crunch time.
But many of the schools still have vacancies: of the 52 small schools opening in September and now accepting ninth graders, 35 are on the list of those with space available.
According to Cushman & Wakefield of Long Island, the Melville branch of the international brokerage, overall vacancies of Long Island declined to 6.5percentt for Class A buildings and to 7.7percentt for Class B buildings in the fourth quarter of 1999.
They may help to reduce vacancies of key personnel.
