Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Rank | Name | Nation(s) | Born | Ascended | Years reigned |
| --- | --- | --- | --- | --- | --- |
| 1. | Bhumibol Adulyadej | Thailand | 5 December 1927 | 9 June 1946 | 68 years, 3 days |
| 2. | Elizabeth II | Commonwealth realms | 21 April 1926 | 6 February 1952 | 62 years, 126 days |
| 3. | Abdul Halim | Kedah (Malaysia) | 28 November 1927 | 14 July 1958 | 55 years, 333 days |
| 4. | Sikiru Kayode Adetona | Ijebuland (Nigeria) | 10 May 1934 | 4 January 1960 | 54 years, 159 days |
| 5. | Hassanal Bolkiah | Brunei | 15 July 1946 | 5 October 1967 | 46 years, 250 days |
| 6. | Goodwill Zwelithini kaBhekuzulu | Zulu people (South Africa) | 14 July 1948 | 17 September 1968 | 45 years, 268 days |
| 7. | Qaboos bin Said al Said | Oman | 18 November 1940 | 23 July 1970 | 43 years, 324 days |
| 8. | Margrethe II | Denmark | 16 April 1940 | 14 January 1972 | 42 years, 149 days |
| 9. | Sultan bin Mohamed Al-Qassimi III | Sharjah (United Arab Emirates) | 2 July 1939 | 25 January 1972 | 42 years, 138 days |
| 10. | Carl XVI Gustaf | Sweden | 30 April 1946 | 15 September 1973 | 40 years, 270 days |
| 11. | Ahmad Shah | Pahang (Malaysia) | 24 October 1930 | 7 May 1974 | 40 years, 36 days |
| 12. | Hamad bin Mohammed Al Sharqi | Fujairah (United Arab Emirates) | 25 August 1948 | 18 September 1974 | 39 years, 267 days |
| 13. | Juan Carlos I | Spain | 5 January 1938 | 22 November 1975 | 38 years, 202 days |
| 14. | Humaid bin Rashid Al Nuaimi | Ajman (United Arab Emirates) | 1931 | 6 September 1981 | 32 years, 279 days |
| 15. | Azlan Muhibbuddin Shah | Perak (Malaysia) | 19 April 1928 | 3 February 1984 | 30 years, 129 days |
| 16. | Mswati III | Swaziland | 19 April 1968 | 25 April 1986 | 28 years, 48 days |
| 17. | Akihito | Japan | 23 December 1933 | 7 January 1989 | 25 years, 156 days |
| 18. | Hamengkubuwana X | Yogyakarta (Indonesia) | 2 April 1946 | 7 March 1989 | 25 years, 97 days |
| 19. | Hans-Adam II | Liechtenstein | 14 February 1945 | 13 November 1989 | 24 years, 211 days |
| 20. | Letsie III | Lesotho | 17 July 1963 | 12 November 1990 | 23 years, 212 days |
| 21. | Harald V | Norway | 21 February 1937 | 17 January 1991 | 23 years, 146 days |
| 22. | Muwenda Mutebi II | Buganda (Uganda) | 13 April 1955 | 24 July 1993 | 20 years, 323 days |
| 23. | Oyo Nyimba Kabamba Iguru Rukidi IV | Toro (Uganda) | 16 April 1992 | 13 September 1995 | 18 years, 272 days |
| 24. | Mizan Zainal Abidin | Terengganu (Malaysia) | 22 January 1962 | 15 May 1998 | 16 years, 28 days |
| 25. | Abdullah II | Jordan | 30 January 1962 | 7 February 1999 | 15 years, 125 days |
| 26. | Hamad bin Isa Al Khalifa | Bahrain | 28 January 1950 | 6 March 1999 | 15 years, 98 days |
| 27. | Otumfuo Nana Osei Tutu II | Ashanti people (Ghana) | 6 May 1950 | 26 April 1999 | 15 years, 47 days |
| 28. | Paku Alam IX | Pakualaman (Indonesia) | 7 May 1938 | 26 May 1999 | 15 years, 17 days |
| 29. | Mohammed VI | Morocco | 21 August 1963 | 23 July 1999 | 14 years, 324 days |
| 30. | Tuanku Syed Sirajuddin | Perlis (Malaysia) | 16 May 1943 | 17 April 2000 | 14 years, 56 days |
| 31. | Henri | Luxembourg | 16 April 1955 | 7 October 2000 | 13 years, 248 days |
| 32. | Sharafuddin Idris Shah | Selangor (Malaysia) | 24 October 1945 | 21 November 2001 | 12 years, 203 days |
| 33. | Norodom Sihamoni | Cambodia | 14 May 1953 | 14 October 2004 | 9 years, 241 days |
| 34. | Khalifa bin Zayed Al Nahyan | Abu Dhabi (United Arab Emirates) | 25 January 1945 | 3 November 2004 | 9 years, 221 days |
| 35. | Albert II | Monaco | 14 March 1958 | 6 April 2005 | 9 years, 67 days |
| 36. | Abdullah | Saudi Arabia | 1 August 1924 | 1 August 2005 | 8 years, 315 days |
| 37. | Mohammed bin Rashid Al Maktoum | Dubai (United Arab Emirates) | 22 July 1949 | 4 January 2006 | 8 years, 159 days |
| 38. | Sabah Al-Ahmad Al-Jaber Al-Sabah | Kuwait | 16 June 1929 | 29 January 2006 | 8 years, 134 days |
| 39. | Tuheitia Paki | Māori King (New Zealand) | 21 April 1955 | 21 August 2006 | 7 years, 295 days |
| 40. | Jigme Khesar Namgyel Wangchuck | Bhutan | 21 February 1980 | 15 December 2006 | 7 years, 179 days |
| 41. | Kapiliele Faupala | Wallis Island (Uvea) (Wallis and Futuna) | 1940 | 25 June 2008 | 5 years, 352 days |
| 42. | Tunku Muhriz | Negeri Sembilan (Malaysia) | 14 January 1948 | 29 December 2008 | 5 years, 165 days |
| 43. | Saud bin Rashid Al Mu'alla | Umm al-Quwain (United Arab Emirates) | 1 October 1952 | 2 January 2009 | 5 years, 161 days |
| 44. | Charles Mumbere | Rwenzururu (Uganda) | 1953 | 19 October 2009 | 4 years, 236 days |
| 45. | Ibrahim Ismail | Johor (Malaysia) | 22 November 1958 | 22 January 2010 | 4 years, 141 days |
| 46. | Polikalepo Kolivai | Sigave (Wallis and Futuna) | 1939 | 7 July 2010 | 3 years, 340 days |
| 47. | Muhammad V | Kelantan (Malaysia) | 6 October 1969 | 13 September 2010 | 3 years, 272 days |
| 48. | Saud bin Saqr al Qasimi | Ras al-Khaimah (United Arab Emirates) | 10 February 1956 | 27 October 2010 | 3 years, 228 days |
| 49. | Tupou VI | Tonga | 12 July 1959 | 18 March 2012 | 2 years, 86 days |
| 50. | Francis | Vatican City | 17 December 1936 | 13 March 2013 | 1 year, 91 days |
| 51. | Willem-Alexander | Netherlands | 27 April 1967 | 30 April 2013 | 1 year, 43 days |
| 52. | Tamim bin Hamad Al Thani | Qatar | 3 June 1980 | 25 June 2013 | 0 years, 352 days |
| 53. | Philippe | Belgium | 15 April 1960 | 21 July 2013 | 0 years, 326 days |
Question:
how many reigned more than 50 years?
Answer:
4