Question: What is the time period that 9537042 is the number of out-of-school children in the geographic region that is the continent where Washington, D.C. is located?
Choices:
2013-05-23
1762-01-01
2012-04-01
2008-01-01
2020
1551
2018-03-31
1634-01-01
2003-07-30
2012-03-01