Year	% of GDP
1991	24.846765039727583
1992	23.376790477421476
1993	21.32161357937963
1994	20.804733404389058
1995	20.53868606203915
1996	20.05938440079526
1997	20.228896310838028
1998	20.40984501742437
1999	19.994610289976112
2000	20.54597006291813
2001	20.34116748138124
2002	19.789911378814622
2003	19.839570983509454
2004	20.033856054311123
2005	20.06974579493163
2006	20.659768225803745
2007	20.85415374767458
2008	20.04955841177464
2009	17.683350165390294
2010	19.695211355482765
2011	20.233000193053062
2012	20.156448634216172
2013	19.925196080175006
2014	20.224394776305495
2015	20.34789734913323
2016	20.661873074002948
2017	20.390339010027056
2018	20.03883581690413
2019	19.579259148386203
2020	18.74376052154548
2021	18.90923164107313
2022	18.43840683448505
2023	18.961190538586223