Feel free to supply better data sources.
The Wall St Journal says it’s about 0.6%
http://online.wsj.com/article/SB10001424127887323699704578328581251122150.html
As we used to say at work, without data you are just another manager with an opinion.
As we used to say at work, opinions are like data, and everyone’s data comes out of some a-hole manager justifying their job for yet another day.
Deo Vindice. Arrivederci minestrone al poopeta infinitum.