27 - Kansas - 1978
26 - Roberta Flack & Donny Hathaway - 1978
25 - Rod Stewart - 1978
24 - Foreigner - 1978
23 - Olivia Newton-John - 1978
22 - Donna Summer - 1978
33 - John Paul Young - 1978
20 - Abba - 1978
31 - Pablo Cruise - 1978
18 - Meat Loaf - 1978