Year Number 1996 53.5519142150879 1998 48.6338806152344 2000 57.9234962463379 2002 53.5135116577148 2003 46.4864883422852 2004 45.7711448669434 2005 48.529411315918 2006 55.6097564697266 2007 54.8543701171875 2008 54.8543701171875 2009 52.1531105041504 2010 52.6315803527832 2011 52.6066360473633 2012 53.0805702209473 2013 50.2369651794434 2014 43.269229888916 2015 44.2857131958008 2016 43.3333320617676 2017 45.7142868041992 2018 40.9523811340332 2019 39.523811340332 2020 45.238094329834 2021 44.761905670166 2022 50.4716987609863