Year	% of GDP
1970	5.42059236821205
1971	4.73367668037111
1972	4.79231358878179
1973	6.48644465740611
1974	6.233539448831
1975	8.01530239337898
1976	8.19893099332303
1977	12.8447040088065
1978	9.62889596384826
1979	7.58986986250375
1980	9.0103266814338
1981	7.6181817238552
1982	8.97394113659147
1983	7.58779662136246
1984	6.19436867631002
1985	5.75365742866153
1986	16.1198356006621
1987	10.6989252512066
1988	7.75996314146165
1989	8.78996390876037
1990	15.0340926243759
1991	12.048363147744
1992	13.8745730303732
1993	9.79385765359598
1994	9.6844379195156
1995	15.8876053628025
1996	14.5660317321628
1997	16.0968651145257
1998	21.6580991002924
1999	13.3682577279386
2000	14.2566872840621
2001	8.05230833851418
2002	8.43552502197745
2003	12.876788824159
2004	11.0999726121988
2005	9.89573734264399
2006	8.39790335721395
2007	11.0139257632603
2008	11.0196462330998
2009	11.7685373496998
2010	9.74027401636415
2011	9.75175017253575
2012	8.76221759400054
2013	7.04128281857076
2014	7.74811012834882
2015	9.81428837559656
2016	11.8770098060358
2017	11.2706711461501
2018	7.69317053500234
2019	7.47321752228644
2020	8.22559671002288
2021	8.82423302294365