Year	% of GDP
1972	13.846465934489466
1973	13.520497735289416
1974	13.999307383687306
1975	13.713358478772514
1976	13.804908679979226
1977	14.26232750759943
1978	14.17156436410959
1979	14.366979582880754
1980	14.755648366123129
1981	15.140389868350503
1982	15.006022443793784
1983	14.274302466494856
1984	14.174360243462534
1985	14.42628811784003
1986	14.439554259525213
1987	14.803018645413497
1988	14.645750663849471
1989	14.614113503704148
1990	14.54173268948826
1991	14.50979892399639
1992	14.11806569579524
1993	14.083790992526206
1994	14.591524542388006
1995	15.085421133633696
1996	15.384491092413668
1997	15.804057559183311
1998	16.247635368145527
1999	16.40305687311522
2000	16.85053133210236
2001	16.20661161743025
2002	15.021169974382756
2003	14.749644859418956
2004	14.782528059826038
2005	15.46006402852253
2006	15.892974912601952
2007	15.979383065886129
2008	15.485606940216176
2009	13.93675550676857
2010	14.272599847752145
2011	14.808916834139833
2012	14.92896053891864
2013	15.36957857349906
2014	15.547567059527964
2015	15.685777178284331
2016	15.588199115718677
2017	15.980173545612939
2018	15.410795499958029
2019	15.382557773995103
2020	15.336433905817485
2021	16.192517553209477
2022	16.78462932738983