| january 2011 - december 2010 |
1.62 % |
|
january 2011 - january 2010 |
9.30 % |
| february 2011 - january 2011 |
-1.60 % |
|
february 2011 - february 2010 |
8.82 % |
| march 2011 - february 2011 |
0.00 % |
|
march 2011 - march 2010 |
8.82 % |
| april 2011 - march 2011 |
0.54 % |
|
april 2011 - april 2010 |
9.41 % |
| may 2011 - april 2011 |
0.54 % |
|
may 2011 - may 2010 |
8.72 % |
| june 2011 - may 2011 |
1.07 % |
|
june 2011 - june 2010 |
8.62 % |
| july 2011 - june 2011 |
2.12 % |
|
july 2011 - july 2010 |
8.43 % |
| august 2011 - july 2011 |
0.52 % |
|
august 2011 - august 2010 |
8.99 % |
| september 2011 - august 2011 |
1.55 % |
|
september 2011 - september 2010 |
10.06 % |
| october 2011 - september 2011 |
0.51 % |
|
october 2011 - october 2010 |
9.39 % |
| november 2011 - october 2011 |
0.51 % |
|
november 2011 - november 2010 |
9.34 % |
| december 2011 - november 2011 |
-1.01 % |
|
december 2011 - december 2010 |
6.49 % |