Year	% of GDP
1972	27.39416395716645
1973	27.50695516278336
1974	28.184920686501734
1975	28.059834758715933
1976	30.65988266668313
1977	29.682187637985958
1978	29.16499720399485
1979	29.17020885719926
1980	32.078886562487476
1981	33.194264401069695
1982	35.386323246342435
1983	37.32610264429706
1984	37.596826003820475
1985	36.7762539785502
1986	36.11211055138529
1987	36.18849061576496
1988	36.127616687629256
1989	32.53295863684826
1990	32.25842101281853
1991	32.84504317665008
1992	33.25866307000922
1993	33.11546159031245
1994	33.77619308678689
1995	35.10979434515842
1996	35.18588814763051
1997	34.37520231235611
1998	33.418384899100985
1999	33.199878259124446
2000	32.940357438008206
2001	30.76912699892621
2002	29.72730813022737
2003	30.061160684238992
2004	31.146654461705293
2005	32.194378185740305
2006	33.75573123665507
2007	33.22462560346001
2008	31.922763105497953
2009	30.88443112217869
2010	30.954488616063497
2011	31.887477261479074
2012	32.376194565778675
2013	32.67103726056077
2014	32.49958781372532
2015	25.91190462947845
2016	26.277159715805187
2017	24.77483534065776
2018	24.416801083098342
2019	23.835412520396027
2020	21.512008187146918
2021	22.155708435239003
2022	22.18512213437141