[CODE4LIB] id.loc.gov downloads: freshness?

[Peter Green]

Does anyone happen to know how often LC's bulk downloads are generated? 
The date currently displayed on the downloads page[1] for each file is 
'27 Oct 2014', but it looks like the names[2] and subjects[3] SKOS nt 
files, at least, haven't actually been touched since March 2014.

Thanks,
Peter
1. http://id.loc.gov/download/
2. http://id.loc.gov/static/data/authoritiesnames.nt.skos.gz
3. http://id.loc.gov/static/data/authoritiessubjects.nt.skos.zip