Wodehousian vs off-centre

Wodehousian

adj
  • Of or pertaining to P. G. Wodehouse (1881–1975), English writer and humorist known for his eccentric half-witted characters. 

off-centre

adj
  • eccentric, unbalanced 

  • (of an axis etc) displaced from the centre 

How often have the words Wodehousian and off-centre occurred in a corpus of books? (source: Google Ngram Viewer )