Year	% of GDP
1970	20.58676654182272
1971	24.789959016393443
1972	15.423758865248228
1973	14.676623376623377
1974	16.288418708240535
1975	20.369606003752345
1976	19.545991561181435
1977	18.296520423600608
1978	25.2457798784605
1979	24.41424041510522
1980	23.00679917557035
1981	25.960471151926534
1982	23.664553709097138
1983	23.154517536770648
1984	20.90980123372173
1985	18.933333333333334
1986	15.711000682061776
1987	17.036492054149498
1988	16.581135193542238
1989	18.37356284201976
1990	16.157332864828966
1991	20.5039388340302
1992	18.383319278699393
1993	16.66620330131242
1994	17.911562982277736
1995	14.857913969331845
1996	14.103116404006446
1997	13.842698131402493
1998	13.29989905478572
1999	12.936627611877169
2000	10.845847773603545
2001	8.689233639252622
2002	10.151571666021823
2003	12.676734863621888
2004	15.272068823968096
2005	17.122637431163927
2006	18.978075170491493
2007	21.178111963744502
2008	20.27250773560331
2009	20.56187693828326
2010	19.06056809610516
2011	22.334490939009086
2012	19.14788493176611
2013	20.816266519355988
2014	21.127625727538582
2015	20.399733443510293
2016	20.999437366674087
2017	20.8320393371405
2018	20.83263522426427
2019	20.714368490448773
2020	21.703412694009096
2021	20.567436694246506
2022	21.08363020811487
2023	21.318937720255168