Year Number 1996 59.5744667053223 1998 36.7021293640137 2000 28.0423278808594 2002 43.3862419128418 2003 14.070351600647 2004 25.7281551361084 2005 31.0679607391357 2006 42.512077331543 2007 38.6473426818848 2008 44.711540222168 2009 39.3364944458008 2010 35.5450248718262 2011 45.0236968994141 2012 45.971565246582 2013 48.8151664733887 2014 62.3809509277344 2015 61.9047622680664 2016 63.8095245361328 2017 61.4285697937012 2018 60.3773574829102 2019 63.2075462341309 2020 69.3396224975586 2021 68.8679275512695 2022 74.0566024780273