Year % gross 2010 109.329002380371 2011 109.899002075195 2012 109.727996826172 2013 108.392997741699 2014 108.138999938965 2015 107.78099822998 2016 107.859008789062 2017 107.574600219727 2018 105.844299316406 2019 104.714958190918 2020 103.199592590332 2021 103.041877746582