Year % of total SPL benefits 2008 14.7484195632919 2009 14.8850002837355 2010 13.9863501083684 2012 14.5449571758349 2013 15.9192974700093 2014 14.2932673978355 2015 13.1106917457773 2016 16.9069980029982 2017 12.9664892711587 2018 13.6225661414502 2019 13.9610590274616