the highest = the best
| Дата | Значение | Изменение , % |
|---|---|---|
| 2021 | 33,46 | 0,48% |
| 2020 | 33,30 | 0,30% |
| 2019 | 33,20 | 1,51% |
| 2018 | 32,71 | -2,71% |
| 2017 | 33,62 | -3,13% |
| 2016 | 34,71 | -0,17% |
| 2015 | 34,77 | 2,75% |
| 2014 | 33,84 | 1,68% |
| 2013 | 33,28 | 1,48% |
| 2012 | 32,79 | 4,87% |
| 2011 | 31,27 | 4,14% |
| 2010 | 30,03 |