Year % of GDP 2010 15.919844931870728 2011 18.69424401509186 2012 20.51189039188344 2013 23.947804519234847 2014 27.22338514026904 2015 24.054767473388686 2016 21.39375778289507 2017 23.92282577184678 2018 23.009757313283096 2019 28.51606226276572 2020 22.68896652886517 2021 25.110416286870667 2022 25.20598027277708