Year	% of GDP
1991	18.880496681095778
1992	18.50416844834399
1993	17.6568815950299
1994	17.796442619963116
1995	17.762316369183484
1996	17.358681190922677
1997	17.269130093766467
1998	17.45939323590499
1999	17.090609242204714
2000	16.81246933393514
2001	16.367705367448465
2002	15.944260186804268
2003	15.567253879049703
2004	15.335061492354809
2005	15.072014226854616
2006	14.970911251952495
2007	14.923419776395091
2008	14.550268875130302
2009	13.303822752739716
2010	13.747290716556963
2011	13.837941089039745
2012	13.567010066961267
2013	13.491449238766656
2014	13.678990062653623
2015	14.141942720421541
2016	14.24119337847434
2017	14.260989990012558
2018	14.223311690855464
2019	14.053970162124973
2020	13.997178903500734
2021	14.139962652810379
2022	14.11487692722976
2023	14.087170757625136