Who Said It First in Parliament?

I like this web-site, you can type in a word and it mentions when it was first used in the House of Commons.

http://parli-n-grams.puntofisso.net/hansard.php

It currently still only has data from 1919 onwards, but it’s still intriguing. In the above image, apparently the first time that the word Thatcherism was used was in 1978.