Year % of total taxes 1990 21.520164011664182 1991 30.03676534246022 1992 22.258662483958364 1993 23.535992324397707 1994 16.75112935857184 1995 20.779620099214412 1996 24.603388998035363 1997 24.508578231531807 1998 20.580798412844533 1999 20.89343911084566 2000 24.474508346824493 2001 25.928709577207908 2002 28.0412499287812 2003 27.567839997322523 2004 26.0876758553232 2005 27.66187334706945 2006 28.060003816289687 2007 27.414735828375562 2008 29.075428708478235 2009 30.49267478433136 2010 29.68769665940317 2011 31.575390557393213 2012 31.43098508785027 2013 34.70038701570677 2014 36.57318386545099 2015 35.271916065822765 2016 36.94380521896079 2017 36.57876042766102 2018 35.65968907287439 2019 35.029925485471544 2020 36.18394547477713 2021 36.749696666416476 2022 35.923085236736725