Year	% of GDP
1974	7.404933477297024
1975	7.198252099875026
1976	8.68467820854164
1978	10.677953670412023
1979	11.193600314357708
1980	11.453860702531129
1981	11.156437893897946
1982	11.08500047764105
1986	11.493796974090117
1987	11.939585620631195
1988	10.663357425807781
1989	10.96159165914745
1990	10.031279484919784
1991	8.982261891501455
1992	9.182688684084965
1993	9.091913698024912
1994	8.655697613349517
1995	10.513891987893249
1996	11.454935785691791
1997	12.074711089679235
1998	12.719343272835806
1999	12.98826764876562
2000	11.780957766363017
2001	12.887983547128332
2002	12.954620170019567
2003	12.996551883942159
2004	13.654423648566008
2005	14.244838097296864
2006	14.998804787374203
2007	15.101475454702594
2008	16.144416238692678
2009	18.075358997829337
2010	19.175636885333653
2011	18.533921916072323
2012	19.991512818580137
2013	20.79442836599571
2014	23.661253013403368
2015	25.731488953595647
2016	26.437799235924818
2017	27.36087213006077
2018	28.070964865692154
2019	28.74103627281965
2020	30.50855001425527
2021	31.721812043518664
2022	33.08269746052948