Year Number 1996 45.7446823120117 1998 21.8085098266602 2000 13.7566137313843 2002 5.29100513458252 2003 4.52261304855347 2004 2.91262125968933 2005 1.94174754619598 2006 4.34782600402832 2007 4.34782600402832 2008 6.73076915740967 2009 7.5829381942749 2010 7.5829381942749 2011 8.05687236785889 2012 8.53080558776855 2013 14.6919431686401 2014 21.4285717010498 2015 14.2857141494751 2016 17.1428565979004 2017 25.7142848968506 2018 26.8867931365967 2019 28.301887512207 2020 41.5094337463379 2021 41.0377349853516 2022 37.7358474731445