Who spent 40% of last year at the top of the UK singles chart? The Saturday quiz

The questions

1 Who spent 40% of last year at the top of the UK singles chart?
2 What Japanese model is the best-selling car ever?
3 The Rubber-Keyed Wonder is a film about which computer?
4 Which dynasty gave its name to a distinctive jaw?
5 Which network televises the proceeding of the US federal government?
6 HO and OO are common scales of what?
7 Which former English head of state died in 1712, aged 85?
8 Which Asian country is known as the graveyard of empires?
What links:
9 Helô Pinheiro; Antônio Carlos Jobim and Vinícius de Moraes; Astrud Gilberto?
10 Pastoral; utility; working; toy?
11 Benfica; Birmingham City; Boston Red Sox and Chicago Cubs; County Mayo?
12 White (US); Blue (South Korea, formerly); Pink (Argentina)?
13 Anne Boleyn; Edith Cavell; Olivia Colman; Diana, Princess of Wales; Elizabeth Fry?
14 Companions of Artemis; East Sussex cliffs; Moscow skyscrapers; Tottenham trees?
15 Ash; eth; ethel; thorn; wynn; yogh?

Confused by the Olivia Colman clue? Photograph: Samir Hussein/WireImage

The answers

1 Sabrina Carpenter.
2 Toyota Corolla.
3 ZX Spectrum.
4 Habsburg.
5 C-Span (Cable-Satellite Public Affairs Network).
6 Model railways.
7 Richard Cromwell.
8 Afghanistan.
9 The Girl from Ipanema: inspired song; wrote song; had hit with it.
10 Kennel Club breed groups of dogs.
11 Allegedly cursed sports teams.
12 Presidential houses/residences.
13 Famous women from Norfolk.
14 Nicknamed Seven Sisters.
15 Obsolete letters in English.