question: How many passengers has the rail service, that uses Burke Centre, carried in fiscal year 2013?
answer: 8.04 million passengers
context: Title: Burke Centre station
  Passage: Burke Centre is a railway station in Burke Centre, Burke, Fairfax County, Virginia.  It is served by the Virginia Railway Express Manassas Line, as well as one daily Amtrak "Northeast Regional" round trip.
  Title: Burke Centre, Virginia
  Passage: Burke Centre is a census-designated place (CDP) and planned residential community west of Burke, Fairfax County, Virginia, United States.  As of the 2010 census, Burke Centre had a total population of 17,326.  Burke Centre Conservancy is a homeowners' association (HOA) to which all of Burke Centre belongs.
  Title: Northeast Regional
  Passage: The Northeast Regional is a higher-speed rail service operated by Amtrak in the Northeastern and Mid-Atlantic United States.  In the past it has been known as the "NortheastDirect", "Acela Regional", or "Regional".  It is the busiest Amtrak route, carrying 8.04 million passengers in fiscal year (FY) 2013, a 0.4% increase over the 8.01 million passengers in FY2012.  The "Northeast Regional" service earned over $568.7 million in gross ticket revenue in FY2013, a 6.2% increase over the $536 million earned during FY2012.
  Title: CalPERS
  Passage: The California Public Employees' Retirement System (CalPERS) is an agency in the California executive branch that "manages pension and health benefits for more than 1.6 million California public employees, retirees, and their families".  In fiscal year 2012–13, CalPERS paid over $12.7 billion in retirement benefits, and in fiscal year 2013 it is estimated that CalPERS will pay over $7.5 billion in health benefits.
citations: Northeast Regional Burke Centre station