Year % (cumulative) 2000 64.9782180786133 2001 65.2084884643555 2002 65.606689453125 2003 66.6179885864258 2004 68.2693634033203 2005 68.4320983886719 2006 69.9540557861328 2007 69.8473281860352 2008 71.1223220825195 2009 72.4439315795898 2010 71.69287109375 2011 71.9201583862305 2012 72.134880065918 2013 71.7295989990234 2014 73.0030899047852 2015 73.5162200927734 2016 71.3695526123047 2017 72.2428894042969 2018 73.9998626708984 2019 73.5008773803711 2020 73.4022369384766 2021 73.5448684692383 2022 73.8028335571289