Context: The U.S. Social Security Administration (SSA), which oversees the world's largest administrative judicial system under its Office of Disability Adjudication and Review (ODAR), has made extensive use of videoconferencing to conduct hearings at remote locations. In Fiscal Year (FY) 2009, the U.S. Social Security Administration (SSA) conducted 86,320 videoconferenced hearings, a 55% increase over FY 2008. In August 2010, the SSA opened its fifth and largest videoconferencing-only National Hearing Center (NHC), in St. Louis, Missouri. This continues the SSA's effort to use video hearings as a means to clear its substantial hearing backlog. Since 2007, the SSA has also established NHCs in Albuquerque, New Mexico, Baltimore, Maryland, Falls Church, Virginia, and Chicago, Illinois.

Question: Who has the world's largest administrative judicial system?
Answer: U.S.

Question: What US Department oversees the World's largest administrative judicial system?
Answer: Social Security Administration (SSA)

Question: In what year did the SSA see a 55% increase in videoconferenced hearings?
Answer: 2009

Question: When did the SSA open its largest videoconferencing-only center?
Answer: August 2010

Question: Where is the SSA's fifth videoconferencing only center located?
Answer: St. Louis, Missouri

Question: In 2010 how many hearings did the U.S. SSA conduct?
Answer: Unanswerable

Question: What did the ODAR do to clear its hearing backlog in August 2010?
Answer: Unanswerable

Question: In what locations has the ODAR opened NHC's since 2007?
Answer: Unanswerable

Question: By what percentage did the SSA's hearing backlog increase in 2009?
Answer: Unanswerable

Question: What does the NHC oversee under its ODAR?
Answer: Unanswerable