Russian Mi-8MTV-5s

I’ve noticed several pictures of new Russian Mi-8MTV-5s (i.e. Mi-17MDs) floating around – does anyone have any solid information as to when they started buying these new machines, how many they’ve bought, etc?

Here’s a picture of one:-

28 Red

You can also see pictures on airliners.net of 23 Red, 27 Red and 73 Yellow.