2009 (more representative):
BIO: 24 (3X)
GC: 24 (2X)
OC: 30 (0X)
PAT: 23 (8X)
RC: 19 (14X)
QR: 18 (9X)
2007 (a bit easier, but not by a huge amount):
21 Bio (4x), 25 GC (1x), 30 OC (0x), 20 PAT (20x), 21 RC (12x), 29 QR (1x)
Actual:
BIO: 24
GC: 30
OC: 27
PAT: 21
RC: 21
QR: 28
As you can tell, even though the 2009 is harder, I actually did around the same (if not a bit better) on the SNS of 2009. The 2009's QR and RC are a bit more difficult (some people say it is a WHOLE lot harder, but to be honest, the QR is not something to take lightly... it's about bootcamp's difficulty maybe a TAD TAD easier). PAT on both 2007 and 2009 are too easy (bootcamp is your best bet).