I think the OP is asking how many years of expenses your portfolio covered in nominal terms at retirement. ie: 33 years = 3.0% WR, 25 years = 4.0% WR, etc
1) The headline above the poll reads: "Years of expenses saved when you pulled the trigger".
2) Then, the OP asked "I am curious to understand how many years of savings people had before they pulled the trigger."
My WR is 3.5%, so that's 29 years of expenses I have accumulated.
And the years it took me to save that up, oh, from my early 20s till the mid-50, so that's about 30 years.
So, either way one takes the meaning, the answer is still the same, although I think the OP meant #1.
But the title to the actual poll reads, "Years of expenses saved when you pulled the trigger."S/he is asking how many years it took to build your nest egg. In other words, you started saving in 1982 and pulled the plug in 2011...it took you 29 years.