| 1992 | 685 reads | 4.04 |
| 1997 | 23 reads | 4.22 |
| 1981 | 454 reads | 4.15 |
| 2013 | 26 reads | 4.09 |
| 2010 | 0 reads | 0 |
| 2009 | 0 reads | 0 |
| 2011 | 0 reads | 0 |
| 2004 | 0 reads | 0 |
| 2012 | 19 reads | 4.15 |
| 1997 | 142 reads | 4.06 |
| 1996 | 167 reads | 4.13 |
| 2002 | 121 reads | 3.75 |
| 9 | 67 reads | 3.62 |
| 1997 | 323 reads | 4.1 |
| 1974 | 287 reads | 3.99 |
| 2003 | 260 reads | 3.66 |
| 1991 | 365 reads | 4.19 |
| 1993 | 81 reads | 3.75 |
| 2009 | 16 reads | 3.54 |
| 1977 | 10 reads | 3.5 |
| 2005 | 366 reads | 3.98 |
| 2004 | 246 reads | 4.23 |
| 1990 | 108 reads | 3.75 |
| 1999 | 439 reads | 4.36 |
| 1983 | 6 reads | 3.2 |
| 2012 | 133 reads | 3.88 |
| 1982 | 47 reads | 3.55 |
| 2008 | 127 reads | 3.81 |