Year % of tax revenue 1992 5.291005291005291 1993 16.653963414634145 1994 0.8492665425314501 1995 3.0280564276306525 1996 2.86092171699667 2003 3.8667972534715362 2004 3.13694208739889 2005 3.7408404691186967 2006 3.441333928109784 2007 19.174062525402185 2008 24.734265195217926 2009 21.29590288671047 2010 5.950397321084658 2011 15.984198625343215 2012 13.685584374988323 2013 10.632565295153968 2014 6.685791656151709 2015 23.48294009740977 2016 18.39637946263967 2017 16.2200633631808 2018 21.774705166429683 2019 16.96266782405932 2020 13.230380508752344 2021 10.832948218068097 2022 3.0649753798218256