updated timeline of the enthronements -
here is a great link of the earlier european enthronements
http://www.angelfire.com/vt/luxenthronement/
1950, May 5 - Coronation - Bhumibol Adulyadej, King of Thailand - following the death of his brother King Ananda Mahidol
1953, June 2 - Coronation - Elizabeth II, Queen of the United Kingdom of Great Britain and Northern Ireland - following the death of her father King George VI
1964, March ... - ... - Constantine II, King of the Hellenes, following the death of his father King Paul
1964, November 12 - Enthronement ceremony - Jean, Grand Duke of Luxembourg - following the abdication of his mother Grand Duchess Charlotte
1967, July 4 - Coronation - Taufa'ahau Tupou IV, King of Tonga - following the death of his mother Queen Salote Tupou III
1967, October 26 - Coronation - Mohammed Reza Pahlavi, Shah of Iran - 26 years after his 1941 accession to the throne he took the title Shahanshah
1969, July 1 - Investiture ceremony - Charles, Prince of Wales
1972, January 15 - Proclamation - Margrethe II, Queen of Denmark - following the death of her father King Frederik IX
1973, September 19 - Enthronement ceremony - Carl XVI Gustaf, King Of Sweden - following the death of his grandfather King Gustaf VI Adolf
1974, 2 June - Coronation - Jigme Singye, Druk Gyalpo (Dragon King) of Bhutan, following the death of his father Druk Gyalpo Jigme Dorji
1975, November 22 - Enthronement ceremony - Juan Carlos I, King of Spain - following the death of dictator
Caudillo Franco
1980, April 30 - Enthronement ceremony - Beatrix, Queen of the Netherlands - following the abdication of her mother Queen Juliana
1984, August 26 - Enthronement ceremony - Hans Adam, Sovereign Prince of Liechtenstein - After his father Prince Franz Josef II passed the power to him
1990, August 15 - Proclamation - Hans Adam II, Sovereign Prince of Liechtenstein - following the death of his father Prince Franz Josef II
1990, November 25 - Enthronement ceremony - Akihito, Emperor of Japan - following the death of his father Emperor Hirohito
1991, Jannuary 21 - Enthronement ceremony - Harald V, King of Norway - following the death of his father King Olav V
1993, August 9 - Proclamation - Albert II, King of Belgium - following the death of his brother King Baudouin
1999, July 30 - Enthronement ceremony - Mohammed VI, King of Marocco - following the death of his father King Hassan II
2000, October 9 - Enthronement ceremony - Henri, Grand Duke of Luxembourg - following the abdication of his father Grand Duke Jean
2005, July 12 - Proclamation - Albert II, Sovereign Prince of Monaco - following the death of his father Prince Rainier III
2008, 1 August - Coronation - George Tupou V, King of Tonga, following the death of his father King Taufa'ahau Tupou IV
2008, 1 November - Coronation - Jigme Khesar Namgyel, Druk Gyalpo (Dragon King) of Bhutan, following the abdication of his father Druk Gyalpo Jigme Singye
2013, April 30 - Enthronement ceremony - Willem Alexander, King of the Netherlands - following the abdication of his mother Queen Beatrix
2013, July 21 - Proclamation - Philippe, King of the Belgians - following the abdication of his father King Albert II
2014, June 19 - proclamation - Felipe VI, King of Spain - following the abdication of his father King Juan Carlos I
2015, July 4 - Coronation - Tupou VI, King of Tonga, following the death of his brother King George Tupou V
2017, May 4 - Coronation - Vajiralongkorn, King of Thailand - following the death of his father King Bhumibol Adulyadej
2019, October 22 - Enthronement ceremony - Naruhito, Emperor of Japan - following the abdication of his father Emperor Akihito