Year	% of GDP
1972	20.658105373953525
1973	19.87229025610425
1974	21.08914511495188
1975	24.709765363466555
1976	25.383791857072897
1977	26.182947562928454
1978	26.167964482221468
1979	25.99392811553123
1980	25.374854317940017
1981	25.82354250616649
1982	27.051996320746678
1983	28.083213537615386
1984	27.00382057593958
1985	27.81273019301193
1986	28.24960527052462
1987	28.72179664482412
1988	27.60261062305645
1989	26.880186782260076
1990	28.155330835176066
1991	34.43343881605933
1992	39.12647649239603
1993	41.903142358719954
1994	40.43078439809982
1995	48.629615724157524
1996	44.904636423302605
1997	40.31965489544884
1998	37.55001079071003
1999	36.49894418355448
2000	33.90671494114715
2001	33.256354232928615
2002	34.319060382797026
2003	34.89578185029226
2004	34.59416218395294
2005	34.6845834826064
2006	34.27936864144549
2007	32.64037375983578
2008	33.37039610840862
2009	38.2234644863464
2010	38.383038433531944
2011	37.883210941524666
2012	38.89731740923313
2013	40.089858604842384
2014	40.55254546948482
2015	40.4243442060695
2016	39.58431026397815
2017	37.89731375468955
2018	37.40865751171497
2019	37.01856932018111
2020	41.25013653282249
2021	39.877285928573706
2022	37.955149110715126