Year	% of GDP
1981	43.3225356654893
1982	44.40549315453521
1983	43.21103856747817
1984	41.96244824391146
1985	38.47139300705585
1986	42.54869293111507
1987	43.867623161346906
1988	43.027992528020825
1989	43.11262470297284
1990	44.12594126927067
1991	44.883215825583754
1992	46.91789438552463
1993	47.47879007119418
1994	48.78027123908108
1995	46.8071513243739
1996	44.26261081334024
1997	44.512631471791124
1998	46.86304756138956
1999	48.600097358920856
2000	48.82773506887392
2001	48.394794854353734
2002	46.26635640103874
2003	48.526081639022955
2004	49.325527476093725
2005	48.57008656178079
2006	49.29184784280173
2007	48.48425933552872
2008	46.88832025630271
2009	50.950079119407135
2010	51.157813266418906
2011	50.33894184057917
2012	50.624173634604944
2013	51.07129882446885
2014	51.45104352522706
2015	53.72115907805362
2016	53.80578043882599
2017	52.73558830786745
2018	51.470652122291824
2019	50.51182301672071
2020	49.3392628908231
2021	47.80108884975136
2022	46.14957509841791
2023	44.40719299003124