| january 2012 - december 2011 |
-0.35 % |
|
january 2012 - january 2011 |
2.35 % |
| february 2012 - january 2012 |
0.41 % |
|
february 2012 - february 2011 |
2.29 % |
| march 2012 - february 2012 |
0.83 % |
|
march 2012 - march 2011 |
2.30 % |
| april 2012 - march 2012 |
0.13 % |
|
april 2012 - april 2011 |
2.09 % |
| may 2012 - april 2012 |
-0.05 % |
|
may 2012 - may 2011 |
1.98 % |
| june 2012 - may 2012 |
0.03 % |
|
june 2012 - june 2011 |
1.93 % |
| july 2012 - june 2012 |
-0.44 % |
|
july 2012 - july 2011 |
1.94 % |
| august 2012 - july 2012 |
0.66 % |
|
august 2012 - august 2011 |
2.08 % |
| september 2012 - august 2012 |
-0.24 % |
|
september 2012 - september 2011 |
1.91 % |
| october 2012 - september 2012 |
0.18 % |
|
october 2012 - october 2011 |
1.85 % |
| november 2012 - october 2012 |
-0.15 % |
|
november 2012 - november 2011 |
1.42 % |
| december 2012 - november 2012 |
0.31 % |
|
december 2012 - december 2011 |
1.33 % |