I'd say at least 70% of all girl names (predominantly in western countries) end in A. That or AH which still makes an A sound.
Most Helpful Girl
I dunno. My username and my real name both end in A. It is a feminine sound I guess? I dunno. I find female names over end in vowels and male names end in constants... Not a hard and fast rule obviously but there definitely seems to be a correlation.1
Most Helpful Guy
perhaps its more realistic to say they end in a phonic vowel sound rather than just an a and i guess the reason could be it sounds softer so deemed more feminine than bob or burt0