Year % (cumulative) 2006 1.3845728635788 2007 1.43878722190857 2008 1.521040558815 2009 1.53168332576752 2010 1.61787545681 2011 1.60120403766632 2012 1.55372023582458 2013 19.0021190643311 2014 19.3246898651123 2015 19.6124897003174 2016 19.920560836792 2017 20.2188396453857 2018 25.779167175293 2019 21.0475006103516 2020 27.0060844421387 2021 27.5063858032227 2022 28.4081382751465