call it quits vs call it stumps

call it quits

verb
  • To conclude; to quit or stop an activity, especially after applying oneself to it for a significant period of time. 

  • To declare debts resolved to one another 

call it stumps

verb
  • To decide to end an activity; to call it a day. 

How often have the words call it quits and call it stumps occurred in a corpus of books? (source: Google Ngram Viewer )