Year % of total taxes 2005 3.612683388856798 2006 3.8633683216448396 2007 5.992105329150803 2008 4.9794688687555455 2009 10.499753022168811 2010 12.523968146732175 2011 12.732497776526216 2012 13.006867798684748 2013 13.439110960100495 2014 13.010778218278377 2015 13.21704865459542 2016 14.31484235025173 2017 15.762277653069159 2018 16.11326923524086 2019 15.732137518253781 2020 16.335060656857774 2021 15.603397417808177 2022 17.567773023063708