At the time of this reply, the results were something like 32% and 44% in the middle two ranges of 38-74 yrs old respectively). That's 74 out of 96 (or the vast majority). Merging the two categories into one and the data showing the older group as the larger bias, you could weight them to slightly biased towards the older group. So non-scientifically about 55-60 yrs of age as the main "peak" of the bell curve.
...roughly the margin of age when expendable income has peaked, midlife-crises are occurring or have just occurred, and professional careers are peaking (all of which would lead to bad GAS - or good GAS, or just GAS). GAS likely being the main contributor to forum membership?!??