Year % of total taxes 1972 25.39483317644598 1973 24.812697160883282 1974 30.428609459579377 1975 30.240367621067517 1976 37.55226149752946 1977 32.89138980960457 1978 33.07041030465302 1979 29.699772443661455 1980 31.25 1981 31.70504624169822 1982 34.11817720948572 1983 31.666031676917218 1984 33.933739147789645 1985 31.179197935089142 1986 33.78469301934398 1987 30.4786852000507 1988 34.958174904942965 1989 32.148353917189084 1990 37.08365731203281 1991 37.12897164320518 1992 40.009256755663365 1993 33.82276447282241 1994 39.05492226937936 1995 31.697257681827253 1996 35.49902205188451 1997 34.28834805308241 1998 37.37786629994795 1999 30.926812626976275 2000 36.04132843354654 2001 30.62343630330314 2002 32.68378647287227 2003 32.51370704906998 2004 32.36778440497747 2005 34.37824870626361 2006 35.98283269917247 2007 36.959130238436586 2008 40.87390962535305 2009 39.67620087463719 2010 38.90047603021632 2011 38.65357538198723 2012 38.54402172181313 2013 39.4533746685187 2014 39.10959718823984 2015 42.04250773457384 2016 42.1136809239355 2017 44.678147046691485 2018 45.00759591866157 2019 46.830404631642175 2020 42.46149531983721 2021 47.40160438161482 2022 43.393307072311984