I think that there are MORE of us, statistically, who are older because there seems to be a direct correlation between CD numbers and the degree of sexual dimorphisim in society.
There was MORE dimorphisim in the 40s, 50's and even 60's than today.Back then, the makeup was more intense, the clothing more strictly sex-specific. CDing then, had an extra "charge" to it and could often be more effective. So those of us who have been CDing from those eras, are likely more numerous.
The traveled author,James Mitcthner, noted and described this effect of local sexual dimorphisim on the number of CDs in different cultures described in his writings.
