Wages are negotiated annually or biennially for minimum wages, basic working conditions and remunerations. This board is overseen by the 5,000-member General Assembly, which convenes biennially. Among them was one that authorized the General Assembly to meet annually instead of biennially. Broadleaf weeds can emerge annually, biennially, or perennially, making consistent management difficult. They were held, at first, annually, and then biennially, in odd-numbered years. The survey was then distributed biennially thereafter. Synods are required to meet at least biennially. Today Sigma Alpha Epsilon is governed by Fraternity Conventions which are held biennially. The award will be granted biennially to a playwright. As of 2013, it has been conferred nineteen times, biennially starting in 2001. This award was initially granted biennially at Grand Arch Councils. The Sports Week was held biennially until 1955. Eurovision Choir is a choral competition held biennially from 2017. India now assesses its forest distribution data biennially. The Presidents Cup has been held biennially since 1994.