| Year | Number of ordinary shares at 31 December | Number of savings shares at 31 December |
| 2012 | 246,458,340 | |
| of which treasury stock | 14,953,500 | |
| 2011 | 246,458,340 | - |
| of which treasury stock | 12,322,917 | |
| 2010 | 259,429,832 | - |
| of which treasury stock | 22,367,587 | |
| 2009 | 259,429,832 | - |
| of which treasury stock | 15,580,101 | |
| 2008 | 259,429,832 | - |
| of which treasury stock | 20,097,587 | |
| 2007 | 259,429,832 | - |
| of which treasury stock | 20,097,587 | |
| 2006 | 259,429,832 | - |
| of which treasury stock | 18,492,691 | |
| 2005 | 259,429,832 | - |
| of which treasury stock | 20,002,273 | |
| 2004 | 259,429,832 | - |
| of which treasury stock | 19,306,539 | |
| 2003 | 259,429,832 | - |
| Following the operation for the obligatory conversion of all of the company's savings shares in ordinary shares | ||
| of which treasury stock | 17,744,363 | |
| 2002 | 259,278,420 | 151,412 |
| of which treasury stock | 8,933,395 | - |
| 2001 | 259,278,420 | 151,412 |
| of which treasury stock | 8,322,076 | - |
| 2000 | 259,278,420 | 151,412 |
| Following the share split operation which saw the nominal value of shares replaced on the basis of 2 new ordinary shares for each old ordinary share and a capital increase destined to finance the stock option plan with the issue of 727,600 new ordinary shares | ||
| of which treasury stock | 8,715,476 | - |
| 1999 | 129,275,410 | 75,706 |
| Following the optional conversion operation of savings into ordinary shares. Capital increase destinated to finance the stock option plan with the issue of 254,500 new ordinary shares. | ||
| of which treasury stock | 6,990,332 | - |
| 1998 | 128,238,058 | 858,558 |
| Capital increase destinated to finance the stock option plan with the issue of 165,000 new ordinary shares. | ||
| of which treasury stock | 4,133,606 | 610,863 |
| 1997 | 128,073,058 | 858,558 |
| of which treasury stock | 735,606 | 610,863 |