Year % 2002 0.9030671 2005 1.10306 2007 0.9933327 2008 1.17529 2009 0.7454804 2011 0.0268938 2012 0.8775906 2013 0.8775906 2014 0 2015 0.8804882 2019 0.4895773 2020 0.4635422 2021 0.5549525