Year	% of GDP
1971	11.407731582786287
1972	13.160569105691057
1973	11.900880339093577
1974	8.239366963402572
1975	9.922725676150334
1976	10.784875393869951
1977	9.45470817618104
1978	8.95657078398195
1979	11.41766524932354
1980	9.96014282155609
1981	8.520867430441898
1982	7.179456266200495
1983	7.4346427316229144
1984	8.311595070001196
1985	7.3037783166490495
1986	5.949648853381189
1987	6.095541791868523
1988	6.510115915992985
1989	6.768447151404086
1990	5.9886768163726405
1991	6.888517382547684
1992	6.717303887151337
1993	7.326041974578776
1994	6.507726269315674
1995	6.450808429278025
1996	6.437127229206436
1997	6.077374421599962
1998	5.946117986258027
1999	6.27577740684807
2000	7.752901809928321
2001	7.981384797066318
2002	5.852893527936618
2003	5.72933246598663
2004	5.365588545474544
2005	4.517697024003143
2006	4.983605032441106
2007	6.068365537597831
2008	5.012512803184693
2009	5.7506934901985005
2010	6.587915924895005
2011	6.284091442519833
2012	5.517393583271263
2013	7.033595793760229
2014	4.776286676088488
2015	4.4702952658018695
2016	5.549884469536441
2017	5.91454437886105
2018	5.665424449575894
2019	5.694033893058887
2020	5.714468645576722
2021	5.780224315536444