| 2008 | 2009 | 2010 |
2011 1st Quarter
| (a) | (b) |
2011 2nd Quarter
| (a) | (b) |
2011 3rd Quarter
| (a) | (b) |
2010 1st Quarter
| (a) | (b) |
2010 2nd Quarter
| (a) | (b) |
2010 3rd Quarter
| (a) | (b) |
2010 4th Quarter
| (a) | (b) |
2009 1st Quarter
| (a) | (b) |
2009 2nd Quarter
| (a) | (b) |
2009 3rd Quarter
| (a) | (b) |
2009 4th Quarter
| (a) | (b) |