Year	% of GDP
1967	35.26535221126359
1968	28.317692643176073
1969	30.21585561954476
1970	30.671085186659163
1971	33.63166892944391
1972	29.598585117193565
1973	33.03114500033338
1974	53.59387365292414
1975	38.92558776553885
1976	32.03685919220741
1977	32.335106307372996
1978	41.42655288008433
1979	39.218459947111825
1980	44.030614550312016
1981	42.10267423934839
1982	43.88838402933726
1983	48.00881206197876
1984	55.94334445467945
1985	59.73471182303488
1986	49.44940970593461
1987	46.056509553391315
1988	46.826932475502076
1989	44.81542419766477
1990	46.584161243898826
1991	47.466981615498085
1992	49.50200504524599
1993	46.24560419301337
1994	56.43427138488305
1995	56.244228193501655
1996	52.494421396572164
1997	57.03742204210113
1998	50.17835001564023
1999	50.02643560363077
2000	55.42257543226835
2001	60.20080301800088
2002	57.829291372181636
2003	58.62814170285405
2004	55.31161766101703
2005	54.125325776284846
2006	60.97667383532016
2007	56.649746244903575
2008	63.47601605604417
2009	50.51919293314363
2010	57.9852972401459
2011	53.91355778292009
2012	59.120594550686675
2013	64.81766087307508
2014	60.6387074880093
2015	63.63963968615162
2016	63.76329642447017
2017	58.06844832639465
2018	60.14478280381748
2019	63.65870276605171
2020	66.99057427950409
2021	67.20994466911732
2022	68.72645864664698
2023	65.97914901950361