Question: What point in time did the city, whose pronunciation audio is Fi-Turku.ogg, have a population of 172107?
Options:
2013-05-23
1864-11-21
1999-12-31
2014-11-30
2000-11-15
1992-02-25
1787-01-01
2004-12-31
2018-11-30
1944-03-02