Year	% of GDP
1970	27.12059249105987
1971	27.48469370736999
1972	27.202954298544192
1973	27.1910614348353
1974	26.717394076488056
1975	25.29947418773466
1976	24.765579336854508
1977	24.88808238578165
1978	24.529331206667347
1979	24.59028996057349
1980	25.103851472997285
1981	24.06296795084403
1982	23.25299769926394
1983	22.835874676564075
1984	22.519554332557686
1985	22.465573229536783
1986	22.50923768489146
1987	23.080917207686863
1988	23.969862676164464
1989	24.756969363457003
1990	24.486472705289525
1991	23.454792360840063
1992	22.835952431340516
1993	21.457635758167008
1994	21.442695689417018
1995	21.273415465706123
1996	21.179657764494824
1997	20.883860250537754
1998	21.29866089684397
1999	21.533073866925395
2000	21.879432633330612
2001	21.499938204889624
2002	20.982588813386673
2003	20.93872170159616
2004	21.15371161151191
2005	21.45876534323177
2006	22.136992669869297
2007	22.856937399094175
2008	22.76750903035122
2009	20.993808180349035
2010	20.599614913417007
2011	20.768495406020683
2012	20.524387468224354
2013	20.294551152338784
2014	20.27899443641847
2015	20.618282735121205
2016	20.93939549466584
2017	21.23682501380016
2018	21.286760758982478
2019	22.003607098798884
2020	21.94791755647397
2021	21.54717460468222
2022	21.940881714700268
2023	22.251327247450604