Year % of total social insurance benefits 2004 2.42426016132163 2005 3.1985782640673 2006 3.85279597051133 2007 3.1985143222463 2008 4.05731027197604 2009 4.63609940384357 2010 4.16590118360307 2011 3.97748469293575 2012 5.52929342410614 2013 5.40504040154309 2014 5.59748180191288 2015 4.5181336157253 2016 4.92773916269233 2017 5.64614821033012 2018 5.52491892139692 2019 4.48800592661024