| Year | Volume | Number | Holdings | ||
|---|---|---|---|---|---|
| 2008 | 4 | 6 | Yes | ||
| 2008 | 4 | 5 | Yes | ||
| 2008 | 4 | 4 | Yes | ||
| 2008 | 4 | 3 | Yes | ||
| 2008 | 4 | 2 | Yes | ||
| 2008 | 4 | 1 | Yes | ||
| 2007 | 3 | 6 | Yes | ||
| 2007 | 3 | 5 | Yes | ||
| 2007 | 3 | 4 | Yes | ||
| 2007 | 3 | 3 | Yes | ||
| 2007 | 3 | 2 | Yes | ||
| 2007 | 3 | 1 | Yes | ||
| 2006 | 2 | 6 | Yes | ||
| 2006 | 2 | 5 | Yes | ||
| 2006 | 2 | 4 | Yes | ||
| 2006 | 2 | 3 | Yes | ||
| 2006 | 2 | 1 -2 | Yes | ||
| 2005 | 1 | 2 -6 | No | ||
| 2005 | 1 | 1 | Yes |