Superscript Characters not printing in a PDF

I was wondering if anybody knows of a work around to print superscript characters in a table.

I am a Structural Engineer and use tables for my loadings however instead of m^2 (the 2 is superscript and no ^) I get m when I print my document to a pdf. But when I print to paper it prints as shown.

The wierd thing is if the superscript isn't in a table it will print ok !!!

I can obviously use ^2 instead but this looks unprofessional and a mess.

I tried to log this problem to Apple, but they wanted $20 just for the privledge

Thanks inadvance