10 22 - Lily Allen (Debut)
9. Fallin For You- Colbie Caillat (Debut)
8. Funhouse- Pink
7. Her Diamonds- Rob Thomas
6. Broken Hearted Girl- Beyonce
5. Please Dont Stop The Rain- James Morrison
4. New In Town- Little Boots
3. Fire- 2NE1
2. Obsessed - Mariah Carey (Debut)
1. Radar- Britney Spears
Falloffs:
#10 Sweet Dreams- Beyonce
#8 You Belong With Me- Taylor Swift (Retired)
#5 Paparazzi- Lady Gaga (Retired)
No.1 Songs of 2009:
Paparazzi - Lady Gaga (x9)
Radar- Britney Spears (x7)
Funhouse- Pink (x4)
Fire- 2NE1 (x2)
Please Dont Stop The Rain- James Morrison (x2)
Broken Hearted Girl- Beyonce (x2)
Love Game- Lady Gaga (x1)
Work- The Saturdays (x1)
You Belong With Me - Taylor Swift (x1)
Evacuate The Dancefloor- Cascada (x1)
21 Guns- Greenday (x1)
one of the best c/ds here 
but...
