Madison: Most popular Twin name of 2011?

I, like many [name]Berry[/name] enthusiasts, have been analysing the SSA’s top 1000 baby names of 2011 released today.
Interestingly, while reading through the Most popular twins names I noticed how favoured [name]Madison[/name] was.
Clearly, if having girl-girl twins, [name]Madison[/name] and [name]McKenzie[/name]/[name]MacKenzie[/name]/[name]MaKenzie[/name] were the go to option.
The combination of [name]Madison[/name] and the 3 variartions of [name]McKenzie[/name] accounted for 48 sets of twins.
However, [name]Madison[/name] over is a poplar name for a twin. Either matched with her sister [name]McKenzie[/name] and [name]Morgan[/name] or her brother: [name]Mason[/name] and [name]Michael[/name]. Overall, [name]Madison[/name] appeared with 108 births, in the top 50 og B/G and G/G alone.
Clearly, [name]Madison[/name] is a popular twine name.

Oh wow, I’d have never guessed!