13. elect or recall the Chairmen, Vice-Chairmen and members of the Committees of the Supreme People's Assembly; 14. deliberate and approve the State plan for the development of the national economy and the report on its implementation; 15. deliberate and approve the State budget and the report on its implementation; 16. hear a report on the work of the Cabinet and the central bodies when necessary, and adopt relevant measures; 17. decide on ratification and nullification of treaties suggested to the Supreme People's Assembly. Article 92. The Supreme People's Assembly holds regular and extraordinary sessions. Regular sessions are convened once or twice a year by the Presidium of the Supreme People's Assembly. Extraordinary sessions are convened when the Presidium of the Supreme People's Assembly deems them necessary, or at the request of a minimum of one-third of the total number of deputies. Article 93. The Supreme People's Assembly requires a quorum of at least two-thirds of the total number of deputies in order to meet. Article 94. The Supreme People's Assembly elects its Speaker and Deputy Speaker. The Speaker presides over the sessions. Article 95. Items to be considered at the Supreme People's Assembly are submitted by the First Chairman of the State Affairs Commission, the State Affairs Commission, the Presidium of the Supreme People's Assembly, the Cabinet and the Committees of the Supreme People's Assembly of the Democratic People's Republic of Korea. Items can also be presented by deputies. Article 96. The first session of each Supreme People's Assembly elects the Credentials Committee and, on hearing the Committee's report, adopts a decision confirming the credentials of deputies. Article 97. The Supreme People's Assembly issues laws, ordinances and decisions. Laws, ordinances and decisions of the Supreme People's Assembly are adopted when more than half of the deputies attending signify approval by a show of hands.