Year	% of GDP
1965	24.26064636086471
1966	23.57723647066601
1967	22.579244369848155
1968	24.63320399880743
1969	22.859136300017997
1970	24.670020965135915
1971	27.157972745232367
1972	26.085749912962857
1973	23.997168175640034
1974	22.79992343423685
1975	25.54303476944641
1976	27.364619192910205
1977	27.80575609329659
1978	28.12202863259487
1979	28.242394917496235
1980	27.131390899794784
1981	28.414125072490258
1982	28.91105565815343
1983	29.303587597564967
1984	30.993426052709726
1985	31.575817317193057
1986	22.72443642406104
1987	20.62603883673885
1988	15.961633987516171
1989	17.769447146733725
1990	17.31353104133051
1991	14.639898894604253
1992	18.315569924481366
1993	9.768125721988545
1994	15.480100492092449
1995	15.063784697103912
1996	20.853120129245173
1997	21.818979938979393
1998	20.31546883077829
1999	17.80977927955262
2000	23.071131514310288
2001	26.311051939994222
2002	25.495564362058992
2003	20.806281130861308
2004	21.290168722045642
2005	22.752224949732355
2006	22.925340121921614
2007	26.237049055802963
2008	29.916051686669736
2009	22.593692074566356
2010	24.86969509861312
2011	27.29230098098705
2012	26.159288883343734
2013	26.035427678184202
2014	27.222413775079296
2015	24.550997198407785
2016	21.688652770861946
2017	20.84792302226077
2018	21.85134940800994
2019	23.528422500722993
2020	18.503094380907996
2021	20.230227402585495
2022	21.99540682098948
2023	20.29999999996321