Year	% of GDP
1997	38.41325113056838
1998	33.26970406966018
1999	29.000400436503384
2000	28.92526747616882
2001	22.27904938453503
2003	22.2165900286035
2004	27.25836663336663
2005	29.318230107298415
2006	31.866648791169506
2007	32.409507767172
2008	32.779155144464575
2009	38.040997750729055
2010	29.143656924762407
2011	27.359957679690922
2012	27.854426218913712
2013	27.12827008177927
2014	29.367421504791334
2015	28.330068056903603
2016	26.674541354001125
2017	27.240632595400825
2018	27.78359782160924
2019	28.27180512268353
2020	32.72227237252922
2021	29.955432373173263
2022	32.27836595380639