What Percentage of DVDs Are Rented Today Through Vending Machines?

The NY Times covers the dispute between the studios and Redbox today. (Just to recap, the studios worry that dirt-cheap $1 rentals via kiosks will hurt their DVD sales and even could put a crimp on VOD and digital downloads... and so they're trying to withhold DVDs from Redbox until four weeks after their initial DVD release.)

But there's this interesting tidbit in the story about where the DVD rental business stands today:

Redbox and its vending rivals now have 19 percent of the rental market, compared with 36 percent for rent-by-mail services (Netflix) and 45 percent for traditional stores, according to the NPD Group, a market research company. NPD estimates that vending will grow to a 30 percent share by the end of next year, at the expense of traditional stores.

I didn't realize that vending machines and Netflix now represent the majority of the DVD rental biz....