List of year-end number-one singles (New Zealand)

Columns: Year | Artist | Title | Certification | Weeks on chart | Weeks at number one
1975 | Freddy Fender | Before the Next Teardrop Falls | 35 | 0 | 1976 | ABBA | Fernando | 32 | 9 | 1977 | Heatwave | Boogie Nights | 21 | 7 | 1978 | Boney M | Rivers of Babylon | 26 | 14 | 1979 | Blondie | Heart of Glass | 23 | 4 | 1980 | Ritz | Locomotion | 19 | 7 | 1981 | Stars on 45 | Stars on 45 | 18 | 7

Example questions:
Which keyboardist joined the musicians with year end number one single in New Zealand Funky Town at a later time ? | Which year did the musicians with the year end number one single in New Zealand Blue Monday break up for a short period ? | Which member of the musicians with year end number one single in New Zealand Rivers of Babylon had a home country in Montserrat ? | Which member of the musicians with year end number one single in New Zealand Heart of Glass went out on her own ?

Answers:
James Leigh | 1993 | Maizie Williams | Debbie Harry