Year % of total taxes 1973 28.47058823529413 1974 28.816793893129738 1975 26.929392446633837 1976 26.55699177438311 1977 26.770293609671793 1978 28.653707703383674 1979 32.96151701059678 1980 29.000000000000124 1981 32.301862961793624 1982 32.861400894187824 1983 33.88146006505238 1984 33.67423672732743 1985 35.56948028013266 1986 26.42548171451038 1987 26.539183339891625 1988 29.884350858042087 1989 35.74593796159527 1990 36.288898976143614 1991 39.45638807615652 1992 40.32795902231074 1993 39.4689579885198 1994 37.224841539950766 1995 37.39768515223354 1996 38.819188332942105 1997 39.599831293901126 1998 38.306004183159786 1999 39.11414150184627 2000 41.46788733501757 2001 40.074969459240606 2002 38.60696418883984 2003 36.085695592286505 2004 37.06548864706025 2005 35.474521594631035 2006 35.94430443090604 2007 38.625232351875205 2008 39.64341374657081 2009 40.31140931791843 2010 38.2836880650821 2011 40.308369197679184 2012 38.24559981139321 2013 45.095918781720634 2014 43.59616311017305 2015 42.76945632631199 2016 40.892972277499126 2017 40.352570802437704 2018 40.510090656043616 2019 39.70311756040255 2020 41.211448900345616 2021 39.5767556844237 2022 42.10672552445665