What are the most and least common kana in Japanese people's last name?


There are 104 kana in Japanese. Literally all of them can be used to spell
people's last names. However, some are used more often than others. For
example, "た", "だ", "とう", because 田 and 藤 are common kanji in last names. My
question is: what kana or kana combination (such as "とう") are more common and
what are less common? Is there some kind of frequency list?

