Year	% of GDP
1970	20.111512957797316
1971	20.687381819792147
1972	25.338548942279203
1973	25.887741435744026
1974	25.165009142899454
1975	24.560893760917644
1976	24.629499812366035
1977	25.170510078777763
1978	25.80519975313149
1979	25.765581247436696
1980	25.446380566043402
1981	24.92208033879691
1982	24.23466928112899
1983	24.028474631028658
1984	24.15375538470971
1985	24.138149749458567
1986	24.489406094403463
1987	24.660399126403696
1988	25.303779371712213
1989	25.580036867379224
1990	25.051620083542183
1991	24.50030047679711
1992	24.125763507799817
1993	23.774572756658078
1994	23.813055914912486
1995	23.825054246758544
1996	23.8578196445517
1997	23.55649081909707
1998	23.432563614284728
1999	23.6776806611827
2000	23.874511673287476
2001	23.41651639258285
2002	22.73537911015036
2003	22.823759504956836
2004	23.18969572329123
2005	23.675783307607187
2006	24.052769138559
2007	24.318179145928685
2008	24.339742016116997
2009	23.606214912857666
2010	23.507770604449888
2011	24.00067421971166
2012	24.48018221583054
2013	24.647049143977117
2014	24.855392367674682
2015	25.114009595265614
2016	25.011120167668217
2017	25.25029329257541
2018	25.719814654138553
2019	25.94514781345409
2020	26.047632712165758
2021	26.185415668495626
2022	26.109712018138897