| Months | 2012 | 2013 | 2014 | | % | | % | | % |
| January | 14,789 | 10.79 | 14,236 | 10.39 | 16,176 | 10.37 | February | 13,819 | 10.08 | 11,767 | 8.58 | 13,338 | 8.55 | March | 13,110 | 9.56 | 10,618 | 7.75 | 13,608 | 8.72 | April | 11,383 | 8.30 | 11,758 | 8.58 | 11,987 | 7.68 | May | 10,215 | 7.45 | 11,224 | 8.19 | 13,929 | 8.93 | June | 11,081 | 8.08 | 10,005 | 7.30 | 12,991 | 8.33 | July | 11,802 | 8.61 | 11,000 | 8.03 | 12,464 | 7.99 | August | 10,989 | 8.02 | 10,976 | 8.01 | 13,165 | 8.44 | September | 10,092 | 7.36 | 10,409 | 7.59 | 12,481 | 8.00 | October | 11,056 | 8.07 | 11,878 | 8.67 | 12,440 | 7.97 | November | 9,350 | 6.82 | 11,455 | 8.36 | 11,841 | 7.59 | December | 9,382 | 6.84 | 12,106 | 8.83 | 11,577 | 7.42 |
| Total | 137,068 | 100 | 137,432 | 100 | 155,997 | 100 |
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