| Période | Valeur | Variation | | 2001-I | 12.2 | 0 | | 2001-II | 11 | -39.34 | | 2001-III | 9.1 | -69.09 | | 2001-IV | 6.8 | -101.1 | | 2002-I | 8.4 | 94.12 | | 2002-II | 9.1 | 33.33 | | 2002-III | 8.8 | -13.19 | | 2002-IV | 9.9 | 50 | | 2003-I | 6.5 | -137.37 | | 2003-II | 8.1 | 98.46 | | 2003-III | 6.5 | -79.01 | | 2003-IV | 10.9 | 270.77 | | 2004-I | 10.9 | 0 | | 2004-II | 12.8 | 69.72 | | 2004-III | 11.1 | -53.13 | | 2004-IV | 13.7 | 93.69 | | 2005-I | 17 | 96.35 |
| | | Période | Valeur | Variation | | 2005-II | 18 | 23.53 | | 2005-III | 19.8 | 40 | | 2005-IV | 17.5 | -46.46 | | 2006-I | 19.6 | 48 | | 2006-II | 16.7 | -59.18 | | 2006-III | 18.1 | 33.53 | | 2006-IV | 20.4 | 50.83 | | 2007-I | 19.1 | -25.49 | | 2007-II | 20.6 | 31.41 | | 2007-III | 22.5 | 36.89 | | 2007-IV | 23 | 8.89 | | 2008-I | 18.5 | -78.26 | | 2008-II | 14.9 | -77.84 | | 2008-III | 17.7 | 75.17 | | 2008-IV | 19.2 | 33.9 | | 2009-I | 19.3 | 2.08 | | 2009-II | 13.7 | -116.06 |
|