Passage: In early modern coronations, the events inside the abbey were usually recorded by artists and published in elaborate folio books of engravings, the last of these was published in 1905 depicting the coronation which had taken place three years earlier. Re-enactments of the ceremony were staged at London and provincial theatres; in 1761, a production featuring the Westminster Abbey choir at the Royal Opera House in Covent Garden ran for three months after the real event. In 1902, a request to record the ceremony on a gramophone record was rejected, but Sir Benjamin Stone photographed the procession into the abbey. Nine years later, at the coronation of George V, Stone was allowed to photograph the recognition, the presentation of the swords, and the homage.The coronation of George VI in 1937 was broadcast on radio by the British Broadcasting Corporation (BBC), and parts of the service were filmed and shown in cinemas. The state procession was shown live on the new BBC Television Service, the first major outside broadcast. At Elizabeth II's coronation in 1953, most of the proceedings inside the abbey were also televised by the BBC. Originally, events as far as the choir screen were to be televised live, with the remainder to be filmed and released later after any mishaps were edited out. This would prevent television viewers from seeing most of the highlights of the coronation, including the actual crowning, live; it led to controversy in the press and even questions in parliament. The organising committee subsequently decided that the entire ceremony would be televised, except for the anointing and communion, which had also been excluded from photography at the last coronation. It was revealed 30 years later that the about-face was due to the personal intervention of the queen. It is estimated that over 20 million people watched the broadcast in the United Kingdom. The coronation contributed to the increase of public interest in television, which rose significantly.

Question: How many people tuned in for the last coronation?
20 million people