Year	% of GDP
1972	32.4465422936623
1973	26.545523955966615
1974	24.038642648781195
1975	27.708686273949418
1976	25.666460222327043
1977	27.21099977082347
1978	26.959475585355502
1979	24.13358352201528
1980	24.208965859163502
1981	25.45239288442315
1982	30.728870907222294
1983	29.06825167588938
1984	29.716524698744063
1985	25.738440362936508
1986	24.0379731474228
1987	21.09005850592651
1988	19.250588311213658
1989	17.709361941282033
1990	16.820608300427867
1991	17.1281093895472
1992	16.593736751519312
1993	16.59825823883157
1994	15.98163956226523
1995	15.124156922871467
1996	15.73844460060595
1997	15.864974471861856
1998	17.226394166467397
1999	18.714003846176887
2000	20.13868050482282
2001	20.05712305599329
2002	20.09262508024906
2003	19.33666269930263
2004	18.208310908155283
2005	17.210974986028674
2006	15.886726955054131
2007	16.041404772264386
2008	18.411132418916765
2009	21.311468170807025
2010	20.20818344930745
2011	19.494509573603906
2012	19.924854523065207
2013	20.19630120464213
2014	20.675252259604836
2015	21.634814883574613
2016	22.126863475841812
2017	22.347256473216877
2018	22.61798700915226
2019	23.31519871377995
2020	26.24219288433875
2021	30.79875847970029
2022	24.05455473075174