Dec 8 (Reuters) - Slovak construction output rose by a real 9.1 percent year-on-year in October after 11.4 percent growth in September, the Statistics Office said on Friday. CONSTRUCTION OUTPUT OCT 06 SEPT 06 OCT 05 pct change yr/yr 9.1 11.4 9.4 (Reporting by Martin Santa in Bratislava) ((For past economic data and analysts' forecasts, double click on <SK/ECON01>)) ((Editing by Alan Crosby; bratislava.newsroom@reuters.com; Reuters Messaging: martin.santa.reuters.com@reuters.net; +421 2 5341 8402)) Keywords: SLOVAKIA ECONOMY/CONSTRUCTION