Charlie Foxtrot vs SNAFU

Charlie Foxtrot

noun
  • clusterfuck, abbreviated to "CF" and expressed in the NATO phonetic alphabet. 

SNAFU

noun
  • A ridiculously chaotic situation. 

  • A major glitch or breakdown. 

How often have the words Charlie Foxtrot and SNAFU occurred in a corpus of books? (source: Google Ngram Viewer )