Year	% of GDP
1970	19.90763728384404
1971	20.402086101970056
1972	25.557954308238674
1973	26.258628255197852
1974	25.778182092273767
1975	24.412380731740317
1976	24.2635737123499
1977	24.750450743523412
1978	25.420147557057724
1979	25.797648665079052
1980	25.62541132619531
1981	25.169820476297062
1982	24.165801162343296
1983	23.699730775519722
1984	23.955315313821767
1985	24.06226227099864
1986	24.2938760612867
1987	24.60410864827746
1988	25.25365133158413
1989	25.428296995556067
1990	25.18744056786814
1991	24.572361687714558
1992	23.880085990325473
1993	23.384823929223064
1994	23.390422060283118
1995	23.479824454286366
1996	23.598845936535994
1997	23.2626277733376
1998	23.170316753452223
1999	23.4582716260864
2000	23.75661044217936
2001	23.029950179697902
2002	22.175017306030288
2003	22.128647638733728
2004	22.37184991570676
2005	22.904559834425367
2006	23.26664150716061
2007	23.17865997217367
2008	22.78603145905486
2009	20.921113873316976
2010	20.563016436603522
2011	20.953991560691858
2012	21.221388384471794
2013	21.14843040646413
2014	21.38414956637686
2015	21.62407313482781
2016	21.716998522835826
2017	21.977359469977053
2018	22.161626861437334
2019	22.396554051268946
2020	22.43234138624316
2021	22.307944382489655
2022	22.42935870293842