Figures for April 2014 to March 2015 published and documented elsewhere on this site, and added into the stats and graphs; I also have the data files for the year to March 2003 and prior - but adding them in is none-trivial as keys such as the three letter code are missing.
For graphs, see:
http://www.wellho.net/demo/railuse.php?place=NE and replace "NE" with the first one or two letters of your postcode area - for example CF to see how the Cardiff area's doing or PL for Plymouth, G for Glasgow.
For individual stations, see
(Chippenham - next trains).html" target="_blank">http://www.firstgreatwestern.info/smr/CPM.html and replace "CPM" with the three letter code you're looking for. Note that you can navigate to nearby stations, and stations with similar ticket numbers, within this application.