Year	% of GDP
1978	28.980190755685985
1979	28.063241106719367
1980	22.875254365696183
1981	22.39133379319909
1982	19.033511814002498
1983	18.591599832636934
1984	17.728733289855597
1985	17.36599226212646
1986	17.843039724100805
1987	19.046567749065943
1988	18.11017991608839
1989	17.291266668767957
1990	13.414798480346512
1991	12.273496169513493
1992	11.87707761032888
1993	11.223914651702756
1994	11.438756315498113
1995	12.013321954679732
1996	11.847442500788546
1997	11.35356839811088
1998	10.67023595183486
1999	11.094944916615033
2000	10.674733054366989
2001	9.540587879885232
2002	9.206520327204789
2003	10.500088108751997
2004	10.389078152012102
2005	9.780162341266486
2006	9.556755356642025
2007	8.727676259214984
2008	8.365059703646487
2009	8.57818591304698
2010	8.795912871172941
2011	8.925955319465567
2012	10.470293519391673
2013	10.146257684522569
2014	10.24237867945576
2015	9.606910561896969
2016	7.700296001871503
2017	8.559608670286503
2018	7.136767711117735
2019	6.53394684079885
2020	8.34849168006754
2021	7.903317617043824
2022	7.780876996195688
2023	9.005028188328508