Year % 1996 43.78033 1999 35.74879 2000 3.084869 2007 35.78082 2009 36.77286 2010 36.77286 2011 34.86517 2012 32.92311 2013 32.92311 2018 32.89047 2019 30.95041 2020 30.95041 2021 28.1869