Year	% of GDP
1972	27.197662601626014
1973	28.54037604608195
1974	30.870425321463895
1975	30.698981383912894
1976	30.628759667716988
1977	32.92207377101579
1978	31.855611957134798
1979	32.96772323154233
1980	32.67873453458441
1981	33.23445171849427
1982	33.769365242027845
1983	31.660764010922165
1984	32.75577360296757
1985	35.0079794399884
1986	35.68753990302487
1987	40.752437603483166
1988	38.4718479547172
2001	33.0814531667599
2002	33.42305353563001
2003	34.45370444699727
2004	34.5632742189067
2005	36.17668853605995
2006	37.07413781074859
2007	35.28041012894205
2008	36.30824789077431
2009	35.54019669903812
2010	32.39936166655192
2011	33.858639628221376
2012	33.15061564916733
2013	32.50042741100616
2014	32.67466285398786
2015	32.73457793161235
2016	32.37548690470487
2017	32.153413546869196
2018	32.03274619251207
2019	32.79266424204906
2020	31.736560647820678
2021	32.82944040664664
2022	33.61029470821007