|
Month
|
2011
|
2010
|
2009
|
| January | 0.63 | 0.91 | 1.50 |
| February | 0.98 | 0.91 | 1.50 |
| March | 0.85 | 0.91 | 0.82 |
| April | 0.69 | 0.91 | 0.82 |
| May | 0.69 | 0.91 | 0.88 |
| June | 0.69 | 0.91 | 0.88 |
| July | 0.91 | 0.50 | |
| August | 0.69 | 0.91 | 0.80 |
| September | 0.91 | 0.80 | |
| October | 0.63 | 0.80 | |
| November | 0.63 | 0.91 | |
| December | 0.63 | 0.91 |