| 2001 | 2002 | 2003 | 2004 | 2005 | | | 2006 | 2007 | 2008 | 2009 | 2010 | | | 2011 | 2012 | | |
|
| 1.20 | 0.77 | 1127.91 | 0.23 | 1.13 | 0.66 | 1108.09 | 0.25 | 1.06 | 0.63 | 1053.83 | 0.22 | 1.03 | 0.59 | 1021.65 | 0.20 | 0.99 | 0.55 | 1012.86 | 0.20 | (0.79) | (0.44) | (813.60) | (0.16) | | | | | 0.75 | 0.39 | 786.01 | 0.15 | 0.70 | 0.33 | 748.74 | 0.15 | 0.64 | 0.28 | 719.84 | 0.14 | 0.61 | 0.25 | 700.03 | 0.13 | 0.58 | 0.22 | 694.69 | 0.12 | (0.49) | (0.19) | (588.72) | (0.10) | | | | | 0.46 | 0.15 | 559.28 | 0.10 | 0.44 | 0.14 | 554.57 | 0.09 | | | | | | | | | |