Starting 1st of January 2013, the membership fee will change to cover a time period of two (2) consecutive years. Members will pay the fee in the beginning of every other year (January of odd-numbered years). As decided by the General Assembly 2011, the two-year membership fee will be 50 € for full membership and 20 € for students and retired members; honorary members do not pay membership fees. Payment to local account of SBSP; non-Nordic/Baltic members to the SBSP treasurer.