crème de la crème vs first choice

crème de la crème

noun
  • Best of the best; something superlative; the very best. 

first choice

noun
  • The one with the highest ranking. 

  • The prime cut. 

  • The most suitable and most optimal choice. 

How often have the words crème de la crème and first choice occurred in a corpus of books? (source: Google Ngram Viewer )