Year Percent 2009 98.36656 2010 98.36618 2011 98.36582 2012 98.36571 2013 98.36559 2014 98.36548 2015 98.36536 2016 98.36526 2017 98.36518 2018 98.3651 2019 98.36504 2020 98.36499 2021 98.36496 2022 98.36494