Year	% of GDP
1961	20.414266756016335
1962	21.656760458078615
1963	21.833743098131205
1964	23.025825834447332
1965	24.046153534541055
1966	24.496860938380117
1967	22.643923608126016
1968	22.055260565945716
1969	22.029016446155286
1970	21.212001831590328
1971	21.287123694674143
1972	21.318719339085867
1973	23.395999575231848
1974	24.28776643226502
1975	21.240431064403552
1976	21.88376311566775
1977	20.59888890927063
1978	20.299221587014035
1979	22.051404291621992
1980	22.1704764957586
1981	22.4920879562004
1982	19.900019725663274
1983	20.052433363505063
1984	20.91206702860387
1985	20.53419194788327
1986	18.967020544479414
1987	20.16679234754276
1988	20.9609933798497
1989	20.138475622310672
1990	17.759890764972837
1991	15.142207882611217
1992	14.056917651051815
1993	14.883827947969444
1994	16.982990179113155
1995	18.949594812255636
1996	19.461567580577622
1997	20.196734015001663
1998	19.774214276070825
1999	21.095886781962246
2000	23.774628073121796
2001	22.635489053482036
2002	21.72473719802193
2003	21.943777150401985
2004	23.66050407183157
2005	24.451754139056916
2006	24.617277079787335
2007	24.4043195574877
2008	24.24740930548076
2009	18.520013474571588
2010	19.312530097616
2011	20.857109411382517
2012	20.917951228193694
2013	21.59729840250635
2014	22.14849389475356
2015	19.569363631568205
2016	19.146454571981202
2017	19.845280989291982
2018	19.58293123040214
2019	20.261633986119243
2020	19.461889002372317
2021	23.290778244750555
2022	24.07478458736505
2023	21.849294308635667