| التاريخ | Value | تغيير , % |
|---|---|---|
| 2019 | 5.92 | -15.79 % |
| 2018 | 7.03 | -40.73 % |
| 2017 | 11.86 | 25.09 % |
| 2016 | 9.48 | 233.47 % |
| 2015 | 2.84 | -84.53 % |
| 2014 | 18.38 | 154.77 % |
| 2013 | 7.22 | 187.98 % |
| 2012 | 2.51 | -161.65 % |
| 2011 | -4.06 | -111.16 % |
| 2010 | 36.41 | -542.60 % |
| 2009 | -8.23 | -124.57 % |
| 2008 | 33.49 |