Year	% of GDP
1972	10.775445850808278
1973	10.901609569277037
1974	12.209105517968794
1975	12.799515241279474
1976	13.433519347658624
1977	14.055344951726326
1978	15.030568867570853
1979	15.726046525761292
1980	16.196369904391627
1981	16.388344593302865
1982	16.34749647451778
1983	16.333266080072463
1984	15.799108813139814
1985	15.42441978487952
1986	15.112401865112163
1987	14.735059862352756
1988	14.319206105147481
1989	14.751484927181982
1990	13.846234221867954
1994	15.02718352387016
1995	15.025493013505208
1996	14.949078734286836
1997	14.431030048271957
1998	20.11456159899377
1999	17.31089009239118
2000	17.109557640698096
2001	16.233399209523338
2002	16.10706021045278
2003	15.72937767644855
2004	15.073756013637302
2005	15.051840734806643
2006	14.845333316391681
2007	14.003794306389405
2008	15.264412101159516
2009	18.211700688408904
2010	17.22174681413944
2011	18.595678872744518
2012	18.11170474751271
2013	18.140650905463843
2014	17.574164772913452
2015	16.973850826428077
2016	16.711244632733283
2017	16.195348534461093
2018	16.071319175876404
2019	16.42389787041226
2020	23.5988078728704
2021	21.638090570738914
2022	20.960958181744445