| CPI | kostprijs krant | |
| jan/06 | 84,54 | 74,04 |
| jan/07 | 85,95 | 77,12 |
| jan/08 | 88,92 | 81,28 |
| jan/09 | 90,98 | 81,67 |
| jan/10 | 91,54 | 84,86 |
| jan/11 | 94,49 | 87,81 |
| jan/12 | 97,94 | 90,88 |
| jan/13 | 99,37 | 96,82 |
| jan/14 | 100,50 | 103,60 |
| jan/15 | 99,85 | 108,14 |
| jan/16 | 101,59 | 111,99 |
| jan/17 | 104,28 | 122,05 |