| january 2011 - december 2010 |
0.56 % |
|
january 2011 - january 2010 |
3.59 % |
| february 2011 - january 2011 |
0.56 % |
|
february 2011 - february 2010 |
3.57 % |
| march 2011 - february 2011 |
1.22 % |
|
march 2011 - march 2010 |
4.00 % |
| april 2011 - march 2011 |
0.33 % |
|
april 2011 - april 2010 |
4.22 % |
| may 2011 - april 2011 |
0.55 % |
|
may 2011 - may 2010 |
4.56 % |
| june 2011 - may 2011 |
0.54 % |
|
june 2011 - june 2010 |
5.13 % |
| july 2011 - june 2011 |
0.76 % |
|
july 2011 - july 2010 |
5.32 % |
| august 2011 - july 2011 |
0.11 % |
|
august 2011 - august 2010 |
5.32 % |
| september 2011 - august 2011 |
0.43 % |
|
september 2011 - september 2010 |
5.65 % |
| october 2011 - september 2011 |
0.75 % |
|
october 2011 - october 2010 |
6.20 % |
| november 2011 - october 2011 |
0.11 % |
|
november 2011 - november 2010 |
6.19 % |
| december 2011 - november 2011 |
0.32 % |
|
december 2011 - december 2010 |
6.41 % |