In which year did this city file the municipal bankruptcy, whose decline was documented in the 2012 documentary film, "Detropia?"
Detropia: Detropia is a 2012 documentary film, directed by Heidi Ewing and Rachel Grady, about the city of Detroit, Michigan. Detropia:  It focuses on the decline of the economy of Detroit due to long-term changes in the automobile industry, and the effects that the decline has had on the city's residents and infrastructure. Decline of Detroit:  In 2013, Detroit filed the largest municipal bankruptcy case in U.S. history, which it successfully exited on December 10, 2014.
2013