Year % of total taxes 1990 13.032602236134721 1991 9.370424597364568 1992 8.837491162508837 1993 10.041912582328287 1994 12.53733281392027 1995 13.968721438001422 1996 15.323658143284957 1997 16.157901189162683 1998 17.606094417298294 1999 20.043043599000278 2000 21.021356177606176 2001 21.914318795831726 2002 20.51308128448298 2003 16.153558958271205 2004 16.862765449525668 2005 16.246987328296196 2006 15.954850153660313 2007 19.295004548221694 2008 19.525244435467393 2009 20.548084472363826 2010 21.166721621631197 2011 23.790428622448363 2012 24.23129749720153 2013 24.76195089018768 2014 24.19929252637263 2015 24.208383526154893 2016 27.116100480149445 2017 26.151791315284505 2018 23.47117513208745 2019 24.633623415867707 2020 34.7630249300261 2021 29.10210713497384