| Période | Valeur | Variation | | 2001-I | 21.9 | 0 | | 2001-II | 31.3 | 171.69 | | 2001-III | 30.2 | -14.06 | | 2001-IV | 29.5 | -9.27 | | 2002-I | 25.9 | -48.81 | | 2002-II | 26.4 | 7.72 | | 2002-III | 25.6 | -12.12 | | 2002-IV | 23 | -40.63 | | 2003-I | 21.9 | -19.13 | | 2003-II | 23.6 | 31.05 | | 2003-III | 22.6 | -16.95 | | 2003-IV | 27.7 | 90.27 | | 2004-I | 24.6 | -44.77 | | 2004-II | 22.3 | -37.4 | | 2004-III | 27.5 | 93.27 | | 2004-IV | 22.9 | -66.91 | | 2005-I | 28.2 | 92.58 |
| | | Période | Valeur | Variation | | 2005-II | 25.5 | -38.3 | | 2005-III | 26.9 | 21.96 | | 2005-IV | 28.5 | 23.79 | | 2006-I | 30.3 | 25.26 | | 2006-II | 32.7 | 31.68 | | 2006-III | 33.7 | 12.23 | | 2006-IV | 33.1 | -7.12 | | 2007-I | 28.2 | -59.21 | | 2007-II | 33.5 | 75.18 | | 2007-III | 29.3 | -50.15 | | 2007-IV | 29.8 | 6.83 | | 2008-I | 29.2 | -8.05 | | 2008-II | 37.1 | 108.22 | | 2008-III | 37.3 | 2.16 | | 2008-IV | 31.3 | -64.34 | | 2009-I | 34.7 | 43.45 | | 2009-II | 33.1 | -18.44 |
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