In a previous article, gwilliam at crc.ac.uk (Gary Williams x3294) says:
>Before I start doing it myself - has anyone compiled codon frequency tables
>for coding sequences of rat proteins. Can you send it on to me please, if you
>>We would also be interested in human, mouse and bovine frequency tables.
There is a tabulation in Nucleic Acids Research 14:r151-r197, 1986, which
includes quite a number of species. I am not aware of any update on that
Hope this helps.