[eterevsky]

Here you go: https://imgur.com/a/fbt68er. I've removed the first and last year since they had incomplete data and did a simple linear regression. These are yearly totals from https://www.weatherbook.org/dash/3/totals

[s1artibartfast]

Undersampled Linear regressions are pretty sensitive to noise points on the ends. Looks like the 90s were lower than next 20 years.