2009 |
2010 |
2011 |
|
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
|
Jun |
|
|
|
Jul |
|
|
Aug(1) |
Aug |
|
|
Sep |
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|
Oct |
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|
Nov |
||
|
Dec |
(1) - Data prior to August 2009 was in Raleigh, NC.