Year % of total taxes 1990 22.288731537581818 1991 15.67338137143985 1992 17.24207698489864 1993 12.79045261842331 1994 9.421751662876208 1995 13.661668190315055 1996 14.81812095514394 1997 15.37561304365645 1998 14.969086485797517 1999 16.039493142060458 2000 17.106710431928352 2001 18.57448325017819 2002 20.80189865967311 2003 25.97958525667436 2004 28.224974524866454 2005 28.5965555148406 2006 29.39367851432788 2007 30.26731295307197 2008 32.22179639536956 2009 35.254326561663625 2010 32.63827054329391 2011 35.01607529720871 2012 35.214250944906404 2013 35.6033686044226 2014 37.38347959414279 2015 38.37197997494378 2016 39.53986591880333 2017 40.5852152542735 2018 45.34484834845523 2019 45.08258913950086 2020 43.67355063984096 2021 43.32850288285396 2022 45.52653360216743