Year % 2008 1.8655232458582758 2009 2.282844336883291 2010 2.4130502683302466 2011 2.7393465263025907 2012 2.6229417248065583 2013 2.7784221622700596 2014 3.3651020863623216 2015 3.996447542483074 2016 3.2489088705105513 2017 3.006367395339068 2018 1.8490046533368505 2019 2.7396647169943877 2020 3.3575096185902353 2021 1.3765113733157772 2022 0.14592036767599345 2023 1.8221867374421554