The timeframe, as I've been stating all along is from 1948
If you use only data from 1948 onward, you are free to try and make your case with evidence.
I assume that historically, it's been relatively stable over the centuries from the information we have.
If this is the case you want to make, then you must use data from before 1948, and jar has been correct all along in his criticisms. If you mean an increase after 1948 relative to frequency throughout the centuries you need much more data.
By the way, you'd also be wrong. I'm not sure where you ever got a meteorologist saying that weather and climate have been stable over the centuries, especially up until 1948. Good luck with that.
holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)