The U.S. has set a new record for denying and censoring federal files under the Freedom of Information Act, analysis by the Associated Press reveals.

For the second consecutive year, the Obama administration more often than ever censored government files or outright denied access to them under the open-government legislation.

The government took longer to turn over files when it provided any, said more regularly that it couldn’t find documents, and refused a record number of times to turn over files quickly that might be especially newsworthy.

It also acknowledged in nearly one in three cases that its initial decisions to withhold or censor records were improper under the law – but only when it was challenged.

Its backlog of unanswered requests at year’s end grew remarkably by 55% to more than 200,000.

The government’s new figures, published Tuesday, covered all requests to 100 federal agencies during fiscal 2014 under the Freedom of Information law, which is heralded globally as a model for transparent government. They showed that despite disappointments and failed promises by the White House to make meaningful improvements in the way it releases records, the law was more popular than ever.

Citizens, journalists, businesses and others made a record 714,231 requests for information. The U.S. spent a record $434 million trying to keep up.

The government responded to 647,142 requests, a 4% decrease over the previous year. The government more than ever censored materials it turned over or fully denied access to them, in 250,581 cases or 39% of all requests. Sometimes, the government censored only a few words or an employee’s phone number, but other times it completely marked out nearly every paragraph on pages.

On 215,584 other occasions, the government said it couldn’t find records, a person refused to pay for copies or the government determined the request to be unreasonable or improper.

The White House touted its success under its own analysis. It routinely excludes from its assessment instances when it couldn’t find records, a person refused to pay for copies or the request was determined to be improper under the law, and said under this calculation it released all or parts of records in 91% of requests – still a record low since Barack Obama took office using the White House’s own math.

“We actually do have a lot to brag about,” White House spokesman Josh Earnest said.

The government’s responsiveness under the open records law is an important measure of its transparency. Under the law, citizens and foreigners can compel the government to turn over copies of federal records for zero or little cost. Anyone who seeks information through the law is generally supposed to get it unless disclosure would hurt national security, violate personal privacy or expose business secrets or confidential decision-making in certain areas. It cited such exceptions a record 554,969 times last year.

Under the president’s instructions, the U.S. should not withhold or censor government files merely because they might be embarrassing, but federal employees last year regularly misapplied the law. In emails that AP obtained from the National Archives and Records Administration about who pays for Michelle Obama’s expensive dresses, the agency blacked-out a sentence under part of the law intended to shield personal, private information, such as Social Security numbers, phone numbers or home addresses. But it failed to censor the same passage on a subsequent page.

The sentence: “We live in constant fear of upsetting the WH [White House].”

In nearly one in three cases, when someone challenged under appeal the administration’s initial decision to censor or withhold files, the government reconsidered and acknowledged it was at least partly wrong. That was the highest reversal rate in at least five years.

The AP’s chief executive, Gary Pruitt, said the news organization filed hundreds of requests for government files. Records the AP obtained revealed police efforts to restrict airspace to keep away news helicopters during violent street protests in Ferguson, Missouri. In another case, the records showed Veterans Affairs doctors concluding that a gunman who later killed 12 people had no mental health issues despite serious problems and encounters with police during the same period. They also showed the FBI pressuring local police agencies to keep details secret about a telephone surveillance device called Stingray.

“What we discovered reaffirmed what we have seen all too frequently in recent years,” Pruitt wrote in a column published this week. “The systems created to give citizens information about their government are badly broken and getting worse all the time.”

The U.S. released its new figures during Sunshine Week, when news organizations promote open government and freedom of information.

The AP earlier this month sued the State Department under the law to force the release of email correspondence and government documents from Hillary Clinton’s tenure as secretary of state. The government had failed to turn over the files under repeated requests, including one made five years ago and others pending since the summer of 2013.

The government said the average time it took to answer each records request ranged from one day to more than 2.5 years. More than half of federal agencies took longer to answer requests last year than the previous year.

Journalists and others who need information quickly to report breaking news fared worse than ever.

Under the law, the U.S. is required to move urgent requests from journalists to the front of the line for a speedy answer if records will inform the public concerning an actual or alleged government activity. But the government now routinely denies such requests: Over six years, the number of requests granted speedy processing status fell from nearly half to fewer than one in eight.

The CIA, at the center of so many headlines, has denied every such request over the last two years.

Originally published by The Associated Press