Year % 2005 4.73684210526316 2006 7.69230769230769 2007 7.69230769230769 2008 7.69230769230769 2009 7.69230769230769 2010 7.69230769230769 2012 16.5 2013 16.5 2014 15.9574468085106 2015 15.9574468085106 2016 15.9574468085106 2017 15.9574468085106 2018 15.9574468085106 2019 15.9574468085106 2020 15.9574468085106 2021 15.9574468085106 2022 16.4705882352941 2023 16.4705882352941