| | Month | 1st month | 2nd month | 3rd month |
| | April 2012 | 1,05% | 0,49% | 1,36% | | May 2012 | 1,34% | 4,76% | 8,50% | | June 2012 | 2,75% | 5,15% | 2,16% | | July 2012 | 1,51% | 0,88% | 0,69% | | August 2012 | 4,90% | 3,22% | 1,83% | | September 2012 | 0,63% | 1,38% | 1,91% | | October 2012 | 2,40% | 6,42% | 7,07% | | November 2012 | 2,71% | 3,52% | 1,15% | | December 2012 | 1,43% | 2,40% | 4,51% | | January 2013 | 0,83% | 1,01% | 1,66% | | February 2013 | 0,86% | 0,66% | 5,01% | | March 2013 | 1,46% | 7,48% | 10,71% |
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