Year Number 2004 47.290641784668 2005 60.9756088256836 2006 58.5365867614746 2007 58.737865447998 2008 61.6504859924316 2009 61.2440185546875 2010 61.4285697937012 2011 59.7156410217285 2012 59.7156410217285 2013 59.2417068481445 2014 69.2307662963867 2015 65.7142868041992 2016 65.7142868041992 2017 67.1428604125977 2018 68.5714263916016 2019 66.6666641235352 2020 73.8095245361328 2021 70 2022 68.3962249755859