Here are the Women:
Here are some of the big drops from 2007 to this year in terms of time for medal winners:
200 Free Women: Pellegrini 1:56.4 to 1:54.8 // Pang and Isakovic 1:58 to 1:55
400 / 800 Free: Adlington 4:09 / 8:25 to 4:02 and 8:14
100 ***: Tarnee White 1:08.3 to 1:06.0
200 ***: Soni 2:23.6 to 2:20.2
100 Fly: Magnusen 58.6 to 57.0
200 Fly: Liu 2:09.4 to 2:04. 1
200 / 400 IM: Rice 2:11.4 and 4:37 to 2:08 and 4:29
Must be the suits ...