Year % of total taxes 1994 17.535517311230425 1995 30.85705187103241 1996 28.41675409475521 1997 28.418328040347884 1998 29.592027602825198 1999 30.18155992251313 2008 53.07844029737521 2009 38.24021345227192 2010 39.25195630278144 2011 44.94494966153073 2012 43.92538060181545 2013 41.686351032145424 2014 39.25411927414932 2015 37.91632292280495 2016 35.575086410769515 2017 35.921721944423446 2018 33.646322905941126 2019 30.040275833641054 2020 31.783620955595477 2021 33.19983052337898