Year	% of GDP
1963	13.203562108427006
1964	11.186917218307354
1965	12.345679012345679
1966	11.649016641452347
1967	13.460703430308293
1968	13.090418353576247
1969	12.459566311249551
1970	13.337779259753251
1971	15.11409661167638
1972	12.394366197183098
1973	8.226390259953932
1974	10.6643119141421
1975	7.251836504049727
1976	4.9442242471294895
1982	9.735935706084959
1983	7.855973813420622
1984	8.235177505794985
1985	8.732018453949088
1986	8.446924527029937
1987	9.718215888816239
1988	10.792349716666546
1989	11.136228023322598
1990	12.704080037972098
1991	15.171265120909903
1992	15.91634526394666
1993	15.215040199407346
1994	14.63430653119013
1995	16.367344231606186
1996	16.972801277472442
1997	16.894161808102087
1998	15.924044780555462
1999	19.265179238008983
2000	19.233964611847952
2001	19.047563027436045
2002	19.96328385139609
2003	20.683325672682834
2004	19.944429803244073
2005	22.201716750971386
2006	20.924960248517483
2007	21.86888228591944
2008	22.748252010296756
2009	24.556594544450686
2010	26.64901613551419
2011	26.38115249170499
2012	25.78059743729423
2013	31.466420410132507
2014	26.231532911363093
2015	23.262907428249342
2016	24.871110399849908
2017	24.05242288629403
2018	23.750444988372227
2019	24.902456251663054
2020	23.517870404406917
2021	23.339582439281674
2022	23.447581482783246
2023	22.53921143158117