Year	% of GDP
1972	30.00523833233585
1973	29.344068333672414
1974	31.09881895136697
1975	33.5693413289656
1976	33.76546762723152
1977	34.13130402512883
1978	35.0931501517492
1979	35.49652916363903
1980	36.46466299815083
1981	38.87265351246174
1982	39.931465702888794
1983	40.66950717493329
1984	41.068928211263454
1985	41.34915187162569
1986	40.77179717963531
1987	40.60925317361104
1988	39.72614947057041
1989	38.79104406935146
1990	38.94913176054373
1991	40.18927014250801
1992	41.53388307460262
1993	43.746440527991304
1994	43.90251365359596
1995	47.099920132843785
1996	47.137299902736316
1997	47.38235519350978
1998	45.58652958511601
1999	45.38914660181771
2000	44.132900036183244
2001	44.37432453517098
2002	45.35154982054112
2003	45.635650709587374
2004	45.015979868769065
2005	45.14135075216391
2006	44.70433205944752
2007	44.19515957885194
2008	44.682682018490446
2009	48.021005751845415
2010	49.32403626742793
2011	47.5857458016517
2012	48.071923933504536
2013	48.11936959808501
2014	48.28941768053718
2015	47.991977918807585
2016	47.88192624508253
2017	47.70799071234115
2018	46.77320668588833
2019	46.30246119702088
2020	51.920134850153076
2021	49.90828170374059
2022	49.00208101877464