Most bills were until 2006 considered by standing committees, which consisted of between 16 and 50 members. The membership of each standing committee roughly reflected the strength of the parties in the House. The membership of standing committees changed constantly; new Members were assigned each time the committee considered a new bill. The number of standing committees was not limited, but usually only ten existed. Rarely, a bill was committed to a Special Standing Committee, which investigated and held hearings on the issues raised. In November 2006, standing committees were replaced by public bill committees.