Year Number 2008 0 2009 0 2010 0 2011 0 2012 0 2013 0 2014 0 2015 51.9047622680664 2016 53.3333320617676 2017 53.3333320617676 2018 50.9523811340332 2019 50.9523811340332 2020 54.761905670166 2021 50 2022 50