Year % 2005 4.21689290154443 2008 3.28295931568749 2009 4.21560573168895 2010 4.46978809972292 2011 4.31505226672907 2012 4.68267915880647 2013 5.20138277526487 2014 4.37223878537497 2015 5.43344268541922 2016 5.45988733459644 2017 5.38635847573106 2018 5.5771355318248 2019 5.52661145827729 2020 5.48181320805811 2021 5.25249755348 2022 6.43753060787676