SOFIA (Bulgaria), February 19 (SeeNews) – Office space rent rates in the capitals of Slovenia and Croatia slid down last year by 15% and 6.0%, respectively, to a monthly 11 euro ($15) per square meter (sq m) in Ljubljana and to 14.5 euro/sq m in Zagreb, commercial real estate brokers and consultants Cushman&Wakefield said in a recent global office space report.