Year	% of GDP
1975	19.649810321135494
1976	21.054211904603314
1977	29.449296059685498
1978	33.6426484383179
1979	34.85233215609438
1980	34.19702879728158
1981	31.495430486721464
1982	29.729732353494764
1983	27.799772964975777
1984	30.84342599791859
1985	27.189312396672804
1986	23.986509706430738
1987	23.474889732626238
1988	24.590410110240825
1989	27.533339792291923
1990	24.60773851907884
1991	24.30926913441921
1992	25.65019850349876
1993	22.63413479489253
1994	20.585093479914274
1995	25.202284043680436
1996	24.06901736562659
1997	24.554660171205683
1998	19.681619130181776
1999	21.337871693965642
2000	20.083924643187185
2001	19.022420376966025
2002	20.947261509751968
2003	20.286255940699814
2004	20.64566069702453
2005	21.52648852344568
2006	25.077753037527835
2007	25.548010262238485
2008	27.18297346558387
2009	23.439300906273264
2010	22.39317383828799
2011	18.9835369238962
2012	15.461802934563137
2013	14.079574748732645
2014	13.30435132269152
2015	12.83301028474289
2016	18.034670157742138
2017	20.7947572231837
2018	18.781320220280463
2019	18.950259292737893
2020	21.1280151020308
2021	19.457252855566292
2022	20.47630413651582
2023	22.068420983768032