We've lost quite a few; I don't know exactly how many.
1800, George Fox, A Journal Or Historical Account of the Life, Travels, Sufferings, Christian Exsperiences, and Labour of Love, in the work of the Ministry:
And I saw how many were destroying the simplicity, and betraying the truth.
2004, John P. Sutton, Thin White Lines, page 233:
Biff then stated, “Take how many you want, they're $700 a piece."
2012, Charlie Gardner, Rotten Timbers, →ISBN, page 143:
I'll phone later and confirm how many I want.
2016, L. James Dempsey, Blackfoot War Art: Pictographs of the Reservation Period, 1880–2000:
The sticks are now going around, and take how many you want.
2000, Glen C. Cutlip, How to Overcome Death: The Final Victory, →ISBN, page 61:
The message itself is neither difficult nor simple, but how many will realize this?
2005, David B. Spangler, Math for Real Kids, →ISBN:
You know how many are in one group and how many are in another group.
2010, Michael A. Curtis, Notes from My Journey, →ISBN, page 39:
How many will say I want to be a good example for my children?
2011, Ian Angus, Simon Butler, Too Many People?, →ISBN:
How many people Earth can support depends in part on how many will wear cotton and how many polyester; on how many will eat meat and how many bean sprouts; on how many will want parks and how many will want parking lots.