Year % 2005 1.97203216008725 2006 1.3880941098103 2007 1.11331194362192 2008 1.47404015453346 2009 1.90149580931642 2010 0.856718804822854 2011 0.809200258986167 2012 0.772055443634477 2013 0.76062170262865 2014 0.713941399054859 2015 0.747486157103378 2016 0.739474218197545 2017 0.637213989984464 2018 0.661973847784663 2019 0.64341884743557 2020 0.751274827365151 2021 0.657443629740033