Year	% of GDP
1973	11.486338479365141
1974	11.779689116902993
1975	12.314150173683203
1976	13.843788935683524
1977	14.112765323655047
1978	13.456973828758247
1979	13.767688348265295
1980	15.180851237502194
1981	16.09136271862593
1982	16.5947178932806
1983	18.337974021781843
1984	18.010634411231496
1985	17.615918285222055
1986	17.55125422547556
1987	15.574426854669285
1988	16.986732069381354
1989	17.73912160779024
1990	17.66850202302882
1991	18.291138236045335
1992	20.026263031397153
1993	18.586618072003503
1994	19.353738108610873
1995	19.694930021161635
1996	20.516758429648526
1997	20.26430124372917
1998	20.412659046248447
1999	20.9342559555524
2000	20.878403516053044
2001	20.514041726191305
2002	20.82750271733368
2003	19.88117057210492
2004	19.97952779637969
2005	20.581928391457772
2006	21.125162349926967
2007	21.34729711558303
2008	21.046826737994646
2009	19.057702101200473
2010	19.64280941067574
2011	21.133339122972753
2012	20.77016240397868
2013	22.662092085829418
2014	22.647399066455044
2015	22.788719105427333
2016	22.331993247609653
2017	22.370587976220737
2018	22.65334670824727
2019	22.201192006777667
2020	22.02092173285307
2021	22.0669219497684
2022	23.047686025312863