Question: Princess Aisha bint Hussein is the sister of the King who has ruled since what year?

Related documents: [0]  [DOC] Abdullah II bin Al-Hussein (Arabic: عبد الله الثاني بن الحسين‎ ‎ , "ʿAbdullāh aṯ-ṯānī ibn Al-Ḥusayn", born 30 January 1962) has been King of Jordan since the 1999 death of his father, King Hussein. According to Abdullah, he is a 41st-generation direct descendant of Muhammad as he belongs to the Hashemite family—who have ruled Jordan since 1921. [END] 
[1]  [DOC] Princess Aisha bint Hussein (born 23 April 1968) is the sister of King Abdullah II of Jordan and is the twin sister of Princess Zein. Her parents are Princess Muna al-Hussein and King Hussein. [END]  
Answer: 1999
1999