Year	% of GDP
1998	25.166493306496278
1999	25.896784034574804
2000	25.627202745316268
2001	25.52321186326592
2002	26.62295733373069
2003	28.943937418513688
2004	29.394572833197845
2005	30.272908177769352
2006	27.672997908106712
2007	28.247296373960367
2008	31.385647998613486
2009	33.477402529876755
2010	32.882676793094504
2011	32.59592941141489
2012	31.7514847611935
2013	30.40010590065195
2014	28.86247462518649
2015	28.257781370907203
2016	27.65785555121395
2017	27.566194033643338
2018	28.40504996324771
2019	27.60944306481894
2020	29.7003861148598
2021	28.871008450900355
2022	27.375875814214123