Year	% of GDP
1966	24.56168503496273
1967	24.716443543480704
1968	24.057751997387665
1969	25.301727288711017
1970	25.23250133376611
1971	24.685174304525347
1972	25.8188234784905
1973	25.702296882654956
1974	24.833368270939587
1975	22.327768207897915
1976	24.19394297369711
1977	23.43631174014253
1978	23.000229658109827
1979	22.335831704476732
1980	20.452688873695788
1981	17.221489103349917
1982	17.881828648633594
1983	18.127863954749966
1984	19.010300725747324
1985	20.668343142094244
1986	22.584332590680518
1987	22.378800696207463
1988	20.845089595068117
1989	20.768212657495148
1990	20.416492970400075
1991	19.575685100618
1992	18.684836415655422
1993	18.05920639478451
1994	18.30103924791478
1995	19.474849664932083
1996	19.60490589944298
1997	20.815067398280398
1998	21.56617658209868
1999	20.91995519427272
2000	21.507614874066235
2001	21.30337657169015
2002	20.638929285753523
2003	20.69939748233661
2004	20.662701800241674
2005	21.173375204621365
2006	23.272718118808836
2007	23.513401677569366
2008	22.943944733504935
2009	20.168900134080367
2010	18.11368897865617
2011	18.158228439949454
2012	18.777700936708225
2013	19.05239180039907
2014	19.16365611772513
2015	19.850629365892267
2016	21.024772899903365
2017	21.225709934311883
2018	21.72730153689137
2019	21.240857699410643
2020	22.158794691274228
2021	22.112419838055565
2022	21.73997756446671
2023	21.755925093935293