Year	% of GDP
1995	27.44824780486661
1996	26.90602098900249
1997	25.988006374192793
1998	26.233514553792634
1999	25.84012822160742
2000	26.18333262265916
2001	26.48338571201657
2002	27.215995337801214
2003	28.708876803304932
2004	29.662275025587185
2005	29.76184771269475
2006	29.589114273678433
2007	29.9593128946609
2008	30.801127091576436
2009	34.10595616303286
2010	33.87705395488521
2011	33.706124094801936
2012	34.18829735290664
2013	34.35796464374046
2014	33.66731016117584
2015	32.134467058372266
2016	31.771016722331403
2017	31.487057300569315
2018	32.35454140607069
2019	33.23995911716187
2020	32.03793093256443
2021	31.858351529852257