Year	% of GDP
1966	23.02898753675956
1967	16.620355411954765
1968	13.730115526522713
1969	13.916756701137006
1970	17.943391326928072
1971	21.445972789625575
1972	20.4358488808866
1973	19.476371379485567
1974	19.108806096528365
1975	18.08263929500494
1976	17.588194312496043
1977	20.063042410348782
1978	21.14546175188268
1979	24.504175133772886
1980	27.446229259359832
1981	27.792692622336933
1982	24.169791586949312
1983	18.862670919224414
1984	17.793673089254632
1985	17.748302939653684
1986	18.720848607752906
1987	20.761202725637713
1988	22.3727460757473
1989	22.524871495719008
1990	22.825136502596553
1991	23.266837643185603
1992	24.29546665345112
1993	23.35452895242801
1994	25.419155686397804
1995	25.255718021172363
1996	25.55336715504966
1997	28.425157109948923
1998	25.227624736826815
1999	20.36314122054892
2000	21.622338973952168
2001	21.041190121879406
2002	18.237610620492223
2003	17.16697077750784
2004	17.771834748346368
2005	18.107037266530938
2006	19.73590997711113
2007	18.318758193215714
2008	18.033929394484407
2009	17.546052572103576
2010	18.118009471202456
2011	19.533867857715194
2012	20.910881815401517
2013	19.458168970282536
2014	18.55186161092564
2015	17.467726870924164
2016	16.528881818743933
2017	16.736996500616065
2018	16.855403538582696
2019	13.674200058909914
2020	11.95843624675003
2021	11.87441443835071
2022	9.920615143640312
2023	10.78440746049915