Year	% of GDP
2004	0.186169862148389
2005	52.2885501853552
2006	60.0103125669976
2007	71.0613177098943
2008	76.4032345561577
2009	83.0735364602996
2010	85.0564772890615
2011	81.8465764287876
2012	79.2722102435333
2013	65.3461139996719
2014	54.5010651455858
2015	49.878977339018
2016	46.6410226466406
2017	45.0626054678279
2018	43.3088072612577
2019	42.3411140191428
2020	43.2869672947911
2021	40.9074897027022
2022	41.071078896708
2023	36.895158816881