Year Number 1996 100 1998 100 2000 100 2002 100 2003 100 2004 100 2005 100 2006 100 2007 90.9090881347656 2008 89.4230804443359 2009 90.9952621459961 2010 90.5213241577148 2011 90.6103286743164 2012 95.7746505737305 2013 92.4882659912109 2014 65.8653869628906 2015 60.476188659668 2016 59.0476188659668 2017 75.2380981445313 2018 74.2857131958008 2019 73.3333358764648 2020 74.7619018554688 2021 73.8095245361328 2022 74.0566024780273