Year	% of GDP
1975	7.775560304805898
1976	8.345818747645732
1977	8.60240440028477
1978	8.739380980122629
1979	8.755183545495443
1980	9.469617968717504
1981	10.278079248236306
1982	10.124433223883164
1983	9.833028153565374
1984	10.061378120682363
1985	10.26018329762906
1986	9.282830442546409
1987	9.148689875043678
1988	8.998941651450249
1989	9.32588491987059
1990	9.575930269620105
1991	9.420013310859458
1992	9.979491989100893
1993	10.380934374060658
1994	10.131259079132217
1995	10.155073552459335
1996	10.251849669950547
1997	11.065549639983363
1998	11.415925566851813
1999	12.742135232596214
2000	13.826183606200297
2001	14.101341535971429
2002	14.600482960554821
2003	14.022266226714173
2004	14.720447428573197
2005	16.507005654008243
2006	17.10042818618744
2007	17.603670885031445
2008	18.164726024827594
2009	17.632608399414693
2010	18.49897093656819
2011	19.170515835925467
2012	20.308090058085696
2013	21.019367652312408
2014	22.211433115575677
2015	24.352299699432827
2016	24.454592710186546
2017	25.408343740882618
2018	26.010425066872873
2019	27.635926077110636
2020	25.617184806773963
2021	26.693998201465767
2022	30.156476061567727
2023	29.75665196160759