| 1965 | 3,647 reads | 4.29 | 704 pages? duration | |
| 1965 | 1,301 reads | 3.78 | 352 pages? duration | |
| 1975 | 780 reads | 3.89 | 626 pages? duration | |
| 1981 | 515 reads | 3.78 | 423 pages? duration | |
| 1984 | 339 reads | 3.65 | 488 pages? duration | |
| 1985 | 262 reads | 3.64 | 624 pages? duration | |
| 1986 | 824 reads | 4.17 | 448 pages? duration | |
| 2011 | 1,561 reads | 4.24 | 621 pages? duration | |
| 2012 | 1,022 reads | 4.3 | 443 pages? duration | |
| 2013 | 897 reads | 4.2 | 539 pages? duration | |
| 2014 | 797 reads | 4.13 | 581 pages? duration | |
| 2015 | 738 reads | 4.38 | 532 pages? duration | |
| 2016 | 674 reads | 4.13 | 538 pages? duration | |
| 2017 | 613 reads | 4.29 | 549 pages? duration | |
| 2019 | 581 reads | 4.56 | 544 pages? duration | |
| 2021 | 518 reads | 4.47 | 528 pages? duration | |
| 1984 | 1,206 reads | 3.8 | 271 pages? duration | |
| 1973 | 579 reads | 3.95 | 214 pages? duration | |