Year % 2009 4.95990413551278 2010 4.38774309355536 2011 3.78150447341427 2012 3.31729162388854 2013 2.45239118205519 2014 1.85071180176899 2015 1.4734265470522 2016 1.32052217577728 2017 1.12682415706513 2018 0.913161529735838 2019 0.855251960083455 2020 1.06536914566418 2021 0.813464699477564 2022 0.71607362746051