| Дата | Значение | Изменение, % |
|---|---|---|
| 2012 | 30 413,35 | -2,10% |
| 2011 | 31 066,06 | -2,78% |
| 2010 | 31 954,51 | -1,70% |
| 2009 | 32 507,45 | -2,74% |
| 2008 | 33 424,00 | -3,90% |
| 2007 | 34 780,00 | -1,97% |
| 2006 | 35 479,00 | 1,02% |
| 2005 | 35 121,00 | -2,77% |
| 2004 | 36 121,00 | 2,39% |
| 2003 | 35 279,00 | -0,71% |
| 2002 | 35 532,00 | 1,68% |
| 2001 | 34 945,00 |