Cases on the court's docket address a broad range of legal issues, including constitutional law, criminal law, evidence, criminal procedure, ethics, administrative law, and national security law. The cases before the court may only be reviewed upon a granted petition for review (which occurs in 10 percent of cases), by certificate from an individual service Judge Advocate General, a sentence of death, a petition for extraordinary relief or a writ appeal petition. Statistics show that the court reviews approximately 10 percent of all court-martial convictions. In the year ending September 1, 2009, the court had 1,002 cumulative filings and disposed of 1,033 cases. Of these 1,033 cases, 46 were disposed of by signed or "per curiam opinions" and 987 were by memorandum or order. (By comparison, the US Supreme Court issued 92 signed opinions in 2009.)