OK speck
I called the number you have provided
It's sounds like the data is hard to come by
What I managed to get from her is from 2009-2011 the number of heads submitted remained constant and actuall less submitted in 2010 I believe is waht she said , they never added any new zones in that time but had added a few new ones in 2012
I asked her if she would call this a spread at an alarming rate, she said no not at all and it's more like a gradual creep
Sounds like they are gonna try and release more data
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