want to check if you have come across this site for S&P 500 PE ratio?
current PE Ratio: https://www.multpl.com/s-p-500-pe-ratio
They also record the earnings per year for S&P : https://www.multpl.com/s-p-500-earnings/table/by-year
Cos I am thinking of plotting the average/median PE ratio for S&P 500. (so can also know when to enter S&P 500 should there be next crash)
Just want to to check if I should use this source to plot or you guys have a better souce?