UFO open history:

Russia : 1989

Mexican Airforce : 10(oct) - 5- 2004

Brazilian Air Force (FAB) :  Friday, May 20, 2005  

France cnes (Centre National d'Etudes Spatiales): 22 March 2007 

UK MOD (Ministry of Defence): Oct 2007 announce UFO file open

Denmark Air Force : 29 th January, 2009,  UFO Disclosure

Canada:  February 20, 2009 : open its UFO X-files

Brazilian Government :  May 4, 2009 disclosed over 600 UFO new pages