Year % 1996 48.39066 1999 37.82275 2000 41.00912 2001 42.43862 2002 42.62583 2003 41.83081 2006 7.280276 2007 41.21905 2010 40.60218 2011 39.81716 2012 33.22695 2013 33.22695 2015 39.49288 2016 37.48024 2017 31.54859 2018 25.9448 2019 25.80326 2020 27.41098 2021 27.4098