Year	% of GDP
1969	59.95916094301095
1970	64.70806302131604
1971	38.50715033135682
1972	40.90370621086478
1973	55.105082724698164
1974	41.87223276407337
1975	49.32908419993291
1976	41.255256190624515
1977	40.196353436185134
1978	37.157616530514176
1979	30.566763417550145
1980	30.16550587882873
1981	31.083070452155624
1982	30.60888297535323
1983	29.414819944598335
1984	26.20645730243496
1985	25.522472767805954
1986	27.38523761375126
1987	29.053059287142936
1988	30.231732850704425
1989	30.280862181580666
1990	35.45167403663929
1991	37.39441237351984
1992	39.092955934384044
1993	45.278137128072444
1994	48.83706658484198
1995	51.831437736949546
1996	54.109171515655305
1997	39.29285448079389
1998	40.49920827955195
1999	39.973346764065504
2000	43.474438708990434
2001	45.467387527756635
2002	44.20143314612055
2003	44.50687648039648
2004	46.377310942001856
2005	48.870498769850144
2006	55.14667191226733
2007	58.282179700405145
2008	61.879156374691235
2009	65.83576772497585
2010	65.6119400619666
2011	66.80692521188229
2012	64.2629354974115
2013	65.75974912945613
2014	61.642576612205104
2015	57.54968771151226
2016	55.292624158159576
2017	51.74342755808347
2018	49.59599074176826
2019	47.06939813463223
2020	60.430790705147515
2021	51.958975802408325
2022	45.698715020858074
2023	42.05728632702165