I would like to know where can I find statistics like the one on the picture. It comes from this answer.
The answers to the question linked to by this answer don't mention it, but a good alternative to the Google Ngram Viewer is COCA which, although smaller by 3 orders of magnitude, does allow for context inspection, which can be used to verify the numbers (false positives always creep their way into the results of a query). COCA is restricted to AmE, but if you're interested in BrE in particular, use BNC, which is 5 times smaller and isn't quite as updated. When using the Google Ngram Viewer, don't go beyond the default range (1800–2000).