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| Episode | _1st_edition | _2nd_edition | _3rd_edition | _4th_edition |
|---|---|---|---|---|
| 1 | 5 689 616 (March 3, 2007) | 3 490 226 (September 8, 2007) | 3 882 171 (March 8, 2008) | 2 902 586 (September 6, 2008) |
| 2 | 5 034 580 (March 10, 2007) | 3 988 506 (September 15, 2007) | 3 721 652 (March 15, 2008) | 2 915 086 (September 13, 2008) |
| 3 | 4 824 807 (March 17, 2007) | 3 719 651 (September 22, 2007) | 3 691 033 (March 22, 2008) | 3 516 900 (September 20, 2008) |
| 4 | 4 598 613 (March 24, 2007) | 3 887 115 (September 29, 2007) | 3 869 518 (March 29, 2008) | 3 056 273 (September 27, 2008) |