Year	% of GDP
1973	12.55060646899609
1974	13.498170699614247
1975	12.713823619769332
1976	14.073384447500331
1977	14.909440628289982
1978	15.62198191984886
1979	15.779849818803132
1980	17.368251501640774
1981	17.784339452700422
1982	19.388292337815994
1983	21.128336541351757
1984	20.9558344369269
1985	20.396108723498262
1986	22.176390590404623
1987	21.492338654927238
1988	23.240405915640068
1989	23.947673494336183
1990	24.17772966063652
1991	24.80852327533717
1992	25.497805235913486
1993	26.27493784038737
1994	25.094003269727295
1995	24.3630312862259
1996	24.290623514697344
1997	25.775632203858574
1998	24.644377810330912
1999	24.99307534913643
2000	23.809740519007093
2001	23.405750071618254
2002	22.89138771831091
2003	22.76357266243214
2004	22.215849272783732
2005	21.959309611924677
2006	23.32782116779765
2007	23.763347918474636
2008	23.489964031250178
2009	23.742944946346373
2010	23.680622988167045
2011	23.647589291270425
2012	24.94682978581024
2013	25.13890393391715
2014	24.84107219490949
2015	24.73952717090896
2016	25.07030954598774
2017	24.683679444023955
2018	24.238180702263847
2019	24.576704903602458
2020	24.759580164164138
2021	25.048539063915904
2022	24.92345552564547