Year % of total taxes 1990 72.33112582781457 1991 69.89380338285217 1992 69.81225680933852 1993 69.50131388006432 1994 70.28587985319683 1995 71.57414613839165 1996 72.87399859216303 1997 73.55465734138699 1998 74.31829054377292 1999 75.55192591942658 2000 76.68496251582124 2001 75.44420622011928 2002 72.88257654035706 2003 72.79940237003657 2004 73.84389253235642 2005 74.29679152870486 2006 75.8272178448785 2007 77.15380373814006 2008 78.71706200379913 2009 76.98908158040373 2010 76.19171859173088 2011 77.37155518626228 2012 77.57175097239751 2013 77.7384807424426 2014 77.95597818012013 2015 78.0140463562195 2016 77.92487417134821 2017 77.96264880842143 2018 78.55765311190811 2019 78.4267962969873 2020 79.81657189547933 2021 78.96989130336787 2022 78.22288981329312