Curiously, the Rugby World Cup failed to make the top 10 list, most likely due to its unsociable screening times in the early hours of the morning.
Meanwhile, TV One continues to be the broadcaster of choice for those aged over 55, with all but one of the top 10 programmes screening on the network.
One News was the most watched programme for viewers aged 5+, ahead of Border Patrol and Fair Go.
Dancing With the Stars was TV3's highest rating series, ranking a distant 59th place with viewers aged 5+.
Top 10 Programmes of 2015 (25-54)
1. Cats Make You Laugh Out Loud (TV2)
2. ICC World ODI Final (Prime)
3. My Kitchen Rules (TV2)
4. Gloriavale: Life & Death (TV2)
5. Intl Rugby Bledisloe Cup (Sky Sport)
6. Shortland Street (TV2)
7. Mrs Brown's Boys (TV One)
8. World's Fattest Man: A Love Story (TV2)
9. Cats Make You Laugh Out Loud 2 (TV2)
10. Fair Go Ad Awards 2015 (TV One)
Top 10 Programmes of 2015 (National, 5+)
1. One News (TV One)
2. Border Patrol (TV One)
3. Fair Go (TV One)
4. Secret Life of Cats (TV One)
5. Intl Rugby Bledisloe Cup (Sky Sport)
6. Border Security (TV One)
7. Hyundai Country Calendar (TV One)
8. Mrs. Brown's Boys (TV One)
9. Sunday (TV One)
10. The Force (TV One)
- nzherald.co.nz