Year	% of GDP
1973	22.460625922139428
1974	21.216270749798458
1975	22.33671295706749
1976	22.30434384751368
1977	23.394929133125256
1978	23.18971758185847
1979	23.1200231941801
1980	23.0748085623956
1981	21.904118436085383
1982	21.6859280490006
1983	20.786086801346435
1984	20.157726304953037
1985	20.34225058147365
1986	21.258646679183578
1987	22.53524002482937
1988	22.60908169301164
1989	21.89338926740368
1990	23.286218111221274
1991	24.491116864640514
1992	23.636510086071794
1993	24.316065576892484
1994	21.846756252562336
1995	20.870164195092052
1996	21.479579252811025
1997	20.937769275374883
1998	20.70809926577816
1999	21.220667574184844
2000	20.9379500759944
2001	21.214158682330282
2002	21.158086511273364
2003	20.35373725161366
2004	20.17000260728604
2005	21.234817556541046
2006	21.600010948667855
2007	21.595200025841045
2008	21.14391577229843
2009	20.944334727819193
2010	20.98619026982714
2011	20.229442507907173
2012	19.407748642348913
2013	19.692094788050202
2014	20.636428613973436
2015	21.16062422464667
2016	21.905110138253402
2017	23.085541342769588
2018	23.056330403482228
2019	24.045482777917854
2020	24.373218836704204
2021	24.507028016728942
2022	24.11165209081643