On Wednesday morning Apple revealed the latest stats on iTunes video: users have downloaded 1 billion TV episodes and 380 million movies total, at the rate of 800,000 TV episodes and over 350,000 movies per day. Combined with the company’s recent revelation that it has 575 million active iTunes(s AAPL) accounts now, one interesting takeaway is that, while the number of iTunes accounts has grown substantially in the last five years, the amount users are spending on video hasn’t changed very much.

Horace Dediu made some calculations and plotted all of the data on a chart over at his Asymco blog:

Based on these latest numbers, Dediu calculated how much iTunes users spend per year on different types of media. He says it’s “about $9/yr on Software, $2/yr on books, $16/yr on apps $12/yr on music and $4/yr on video.”

On one hand, this chart backs up something we already…