Centar<2013>18.7<2014>18.7<2015>17.1<2016>16.8<2017>17.1<2018>14.4<2019>16.6 Jug<2013>17.8<2014>16.2<2015>18.4<2016>19.8<2017>19.6<2018>23.2<2019>19.9 Sjever<2013>41.8<2014>39.4<2015>41.4<2016>39.5<2017>37.9<2018>40<2019>41.2