First of all, we're offering the pre-built, 2012 versions. Here is the A4 and A5 version:
Word file or as a PDF file. Either way, simply print for an A4 version or print on A4 using booklet mode for an A5 page.
Alternatively you can print this A4 Word file or this PDF file and Z fold it to fit A5.
Here's the version for the Personal Filofax:
If you want to tinker, you can download the source files. For the A4/A5 version you'll need this Word file and this Excel file. For the Personal version you'll need this Word file and the same Excel file. For the Z fold version you will need this Word file and the same Excel file.
If you're into the whole mail merge thing and want to poke around under the bonnet, you'll find we've done this layout a little differently. Each record is just a month and we've used a special type of mail merge called a catalogue or directory merge to put twelve separate records on one page. To ensure you only get one header row on the table, we placed that in the document's header.
This work by Philofaxy is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. Please download, adapt, use, share, but don't charge or use commercially.