Does anyone know the proper form of the "apostrophe" in an abbreviation of a year?
…as in '09.
I'm getting mixed feedback on this from various applications; InDesign, Word, Text Edit, etc.
I'm assuming this version is correct:

But, when listed in sequence Word automatically switches it around to an apostrophe, prompting a client to bring this up:

I've looked all over and can't seem to find anyone who addresses this in a typographical way. Any feedback would be greatly appreciated!