Year % 1993 31.42489 2000 32.54036 2001 36.08825 2002 36.1299 2003 36.1299 2007 36.59655 2008 36.34422 2009 35.82361 2010 37.22477 2013 35.7102 2016 40.7303 2017 41.77619 2018 42.33844 2019 42.60594 2020 43.58987 2021 43.58987