Year	% of GDP
1991	28.184571518051623
1992	27.719329086625983
1993	28.96828587898142
1994	28.13088982231769
1995	35.622540965160304
1996	35.33637715611011
1997	35.65195060352204
1998	34.273941098826235
1999	35.48329020080203
2000	37.53355267273693
2001	36.58787336376606
2002	36.58714137125427
2003	37.31344957453947
2004	37.85641293352969
2005	39.72772989941862
2006	40.15289816298539
2007	40.20435026257609
2008	36.644385497461144
2009	29.9144132731654
2010	34.24677250110196
2011	36.1386568794034
2012	37.15325014387137
2013	35.08599349897639
2014	33.90327651542052
2015	29.309306812886
2016	30.62997473089532
2017	29.39909482621177
2018	30.26817572830849
2019	30.0923350761555
2020	28.541250963216957