Year % 2010 7.84376122521316 2011 5.39637230168725 2012 6.4018854955144 2013 5.11514486567446 2014 6.58398471153915 2015 8.58250269886561 2016 9.60809945919417 2017 12.4845780313065 2018 9.93009079379241 2019 9.61371669561269 2020 8.69677193421737 2021 7.63089352247962