Year	% of GDP
1971	9.652278177458031
1972	14.8615056818182
1973	18.595041322314
1974	15.5277044854881
1975	24.9585749792875
1976	23.0097252063779
1977	18.7816856780735
1978	20.949941915725002
1979	15.6407473447554
1980	14.9098813070874
1981	15.713425647200499
1982	16.666029220530902
1983	17.1593698854337
1984	16.8930416756907
1985	15.5614660502423
1986	15.8665775911433
1987	13.2023149264529
1988	13.6997984183594
1989	12.5
1990	12.390941464500301
1991	11.0639102916896
1992	12.1840929027946
1993	11.5257307019735
1994	11.766452600004
1995	10.9676477238468
1996	9.40707829017925
1997	9.3579111585516
1998	8.21609216715177
1999	7.51678821932738
2000	7.08570878292736
2001	8.19564037118769
2002	8.10066565457833
2003	7.962034986515951
2004	7.860379597178239
2005	7.714034108533049
2006	7.0990936186803495
2007	6.71756431693885
2008	4.96024822382651
2009	6.07257047519031
2010	5.64885516492993
2011	6.45275108066004
2012	10.583203152895699
2013	9.74727260107489
2014	8.86041181394662
2015	9.57116730321235
2016	10.563126228939899
2017	8.413249952121541
2018	8.26760144238502
2019	7.43921190765759
2020	8.03024250539625
2021	6.557983220285619
2022	5.16766661805132