Year % (cumulative) 2002 11.5617303848267 2007 8.42371463775635 2008 13.7768802642822 2009 14.4202299118042 2010 15.1715297698975 2011 17.8936805725098 2012 15.9982042312622 2013 17.5872497558594 2014 19.079610824585 2015 20.3870391845703 2016 21.2945804595947 2017 21.4512405395508 2018 22.3370971679688 2019 22.7333507537842 2020 23.2119102478027 2021 23.7026824951172 2022 23.5940017700195