Year % of total taxes 1998 20.08814411634452 1999 18.281435909341536 2009 10.712887250950134 2010 11.332349068273412 2011 12.955520825581107 2012 9.202564333157753 2013 7.100474027911294 2014 8.539143783046223 2015 7.394556672139703 2016 7.168385970480876