Year	% of total SPL benefits
2011	20.3746685652797
2012	18.7682318596492
2013	18.1810154640106
2014	19.6577290101065
2015	19.7924430994137
2016	18.1694541513719
2017	19.3652253110742
2018	20.0613108292601
2019	20.1985974741487
2020	18.4514467587532
2021	18.4198007913965