Year % 2000 37.459 2001 40.523 2002 42.311 2003 37.796 2004 41.428 2005 40.611 2006 37.561 2007 36.408 2008 36.228 2009 36.418 2010 38.586 2011 38.043 2012 36.804 2013 37.456 2014 34.269 2015 37.354 2016 38.576 2017 41.776 2018 39.617 2019 39.354 2020 42.12 2021 38.025 2022 40.393