Year % of total SPL benefits 2008 11.6526938789836 2009 2.7175080787686 2010 1.87616029296952 2011 6.31886207556606 2013 7.60794011573542 2015 15.0506644361108 2016 6.70181807968632 2017 8.25734512094927 2018 6.36553753137518 2019 1.7113877455306