Year % of GDP 2011 5.123678014139973 2012 4.512906406107532 2013 4.386116924297256 2014 4.6839690424541995 2015 4.654611906732876 2016 4.906915624064849 2017 5.27970823479233 2018 5.099145397032432 2019 5.827210533812998 2020 5.219837781176017 2021 5.180059070244743 2022 5.158530005674167