Here's a fun graph for you: number of christmas albums released per year since 1940. Starts off fairly low, then, starting in the early nineties, the numbers begin to skyrocket, peaking at 70(!!) in 2008, with the numbers declining heavily since then. I wonder what's up with that? I mean, Mariah Carey didn't help, but she alone can't be responsible for that peak a decade and a half later, can she? The world may never know...
Like, jesus fuck, there are about as many albums in the first 15 years of that graph (71) as there were in 2008! How the fuck?!
And another thing, what caused the Christmas album crash? Why do we have a whole order of magnitude less albums this year (to date) than we did in 2008? What caused everyone to stop making Christmas albums? Another thing the world may never know...
I guess part of it is that no one really cared. If you look at the most popular holiday songs, the newest song is Mariah Carey in 1994 (and a recording of some older songs from 1995). Despite the dozens upon dozens of Christmas albums produced over the 2000s, none have managed to really worm their way into the popular conscience. So, if no one's gonna care, why bother? But, that's just one possibility.
Anyways, this has been incredibly lazy, completely pointless data analysis with Aura.
In case you're curious, all data basically came from the wikipedia categories for " Christmas albums". That probably misses some albums, but it's close enough I'm sure.