Year	% of GDP
1975	0.47373548157314693
1976	0.45307087919941924
1977	0.5161544083766951
1978	0.5290365288530542
1979	0.5495078593407424
1980	0.5780126307517164
1981	0.6128789321242659
1982	0.6105027652927814
1983	0.5589337848277068
1984	0.5660489131883212
1985	0.5472083739335759
1986	0.49977272660829886
1987	0.4420748109969455
1988	0.4399342254063924
1989	0.4699494202089113
1990	0.44643641582915616
1991	0.4287471273893147
1992	0.4147404273036737
1993	0.4335512374435286
1994	0.43592699587036077
1995	0.3634614990376569
1996	0.3591485115446187
1997	0.4239492199406029
1998	0.4517000531484909
1999	0.42430595296474083
2000	0.4456877940319972
2001	0.4531445325385022
2002	0.4522016828921795
2003	0.4483862760151626
2004	0.4636266463192721
2005	0.5029241014622775
2006	0.5282108858515818
2007	0.5727339372957924
2008	0.6163516799173192
2009	0.6464124483543822
2010	0.6393106929529595
2011	0.6467093484080703
2012	0.6699066919286694
2013	0.7203757705181332
2014	0.7223400869581474
2015	0.7575612827773679
2016	0.7662960380755799
2017	0.797915192897323
2018	0.804034302551354
2019	0.8493145002302053
2020	0.8361154430259655
2021	0.8165287376629227
2022	0.8446959516269366
2023	0.8133540752552916