France is the first country to open up fully its UFO files to the public. Edit

France’s national space agency has opened its UFO files to the public by launching a website which documents reported sightings over five decades. The website drew so much attention the host servers crashed several hours after it opened because of heavy traffic. The site is very well organized and complete, even including scanned copies of police reports. “Of the 1,600 cases registered since 1954, nearly 25 percent are classified as “type D,” meaning that despite good or very good data and credible witnesses, we are confronted with something we can’t explain, scientists say. Other countries collect data more or less systematically about unidentified flying objects, notably in Britain and in the United States, where information can be requested on a case-by-case basis under the Freedom of Information Act.”
“The team offers explanations for some of the sightings - for example when 1,000 people reported seeing flashing lights in the sky one November night 17 years ago, the researchers were able to prove it had been a rocket fragment falling back into the earth’s atmosphere. But only about 9% of France’s UFO cases have ever been fully explained, the group says. The online archives will be updated whenever new cases are reported.”