| Value | Category |
|---|---|
| 1 | Before January 25th 2011 |
| 2 | During the 18 days ending February 11th 2011 |
| 3 | From February 12th 2011 to January 25th 2012 |
| 4 | From January 25th 2012 to June 30th 2012 |
| 5 | From June 30th 2012 to May 1s 2013 |
| 6 | From May 1st 2013 to June 29th, 2013 |
| 7 | From June 30th 2013 to present |
| 8 | Missing |
| 9 | Missing |
| 10 | Missing |
| 11 | Missing |