Year	% of GDP
1975	46.6140925925698
1976	51.24004126029361
1977	51.026206718855995
1978	50.988520838298044
1979	51.86531187421197
1980	42.47053045186641
1981	44.061311914323966
1982	43.724903887227676
1983	42.81174577634755
1984	43.237356958287194
1985	45.66843033509701
1986	44.65788628332798
1987	45.14002333722287
1988	44.53647833241909
1989	44.498141263940525
1990	70.99827032369657
1991	70.51181102362204
1992	71.52018395503322
1993	70.60722891566265
1994	71.93667668130345
1995	72.15294909172461
1996	72.8270929743374
1997	71.9502487562189
1998	70.43946346629015
1999	70.59120768064679
2000	71.2632783134499
2001	71.50106400392863
2002	73.69225816835667
2003	71.74170431531391
2004	72.85382493830744
2005	71.93480822097133
2006	72.5253202066505
2007	72.03207015437967
2008	72.46357848588505
2009	73.82939156394757
2010	73.2322363893538
2011	71.83498598934206
2012	71.92982606049347
2013	73.25684138672581
2014	72.7829220128325
2015	73.411278943354
2016	73.08400304867135
2017	72.3681409730125
2018	71.99065889714288
2019	72.74345639532271
2020	72.50523564845578
2021	71.71664938417997
2022	72.88722788948132
2023	72.34859786295894