Year Number 2003 52.7638206481934 2004 74.7572784423828 2005 67.4757308959961 2006 65.7004852294922 2007 53.6231880187988 2008 57.6923065185547 2009 63.9810409545898 2010 62.5592422485352 2011 62.0853080749512 2012 63.0331764221191 2013 62.5592422485352 2014 52.8571434020996 2015 53.8095245361328 2016 52.8571434020996 2017 54.2857131958008 2018 55.6603775024414 2019 56.6037750244141 2020 61.3207550048828 2021 61.3207550048828 2022 62.2641525268555