Article 1 
The rate of the contribution referred to in Article 83(2) of the Staff Regulations shall be: — 11 %, with effect from 1 July 2011, — 10 %, with effect from 1 July 2012, — 10,9 %, with effect from 1 July 2013.
Article 2 
This Regulation shall enter into force on the day following that of its publication in the Official Journal of the European Union .