Here is a reference you may be interested in:
codon usage tables tabulated from genbank (cutg) reformatted in gcg format
on the SRS-server at SEQNET (http://www.seqnet.dl.ac.uk/srs/srsc).
>From the SRS start page, select cutg from the 'Search libraries of
bioinformatics information', search with organism name. They have several
Chlamy tables, you just need to open them up to find the one you want.
Porter Lab, University of Minnesota