Year	% of GDP
1971	7.351800049208235
1972	7.514479355136484
1973	8.77192972965469
1974	6.184249704004836
1975	11.15297963709561
1976	14.074533065861955
1977	15.742521637527846
1978	19.961815420805873
1979	28.068460889041464
1980	21.527968972757744
1981	25.64299750914531
1982	25.722684350474108
1983	32.05776826541486
1984	30.903693731395855
1985	28.280871174035628
1986	26.360318868257142
1987	24.875569307213453
1988	19.494786482269845
1989	23.44621474148032
1990	21.602167111212005
1991	31.504297461912532
1992	26.042473162262645
1993	20.839908025664432
1994	16.061068552502483
1995	15.859102740831835
1996	17.037003814149543
1997	18.184620739439282
1998	14.703728870219933
1999	14.96579210769758
2000	15.833545571079002
2001	13.190447578332742
2002	13.26787356790646
2003	12.311983877006554
2004	12.192607723725962
2005	13.546822444142737
2006	16.900283160030952
2007	19.100284070698553
2008	16.276381632207055
2009	19.748576983525755
2010	16.558005368600316
2011	13.233457099449033
2012	11.38462858897998
2013	11.739029962297893
2014	14.748285321959878
2015	15.311783148043101
2016	13.181889490804007
2017	13.430607772305805
2018	12.280005043271714
2019	12.275295377907396
2020	8.886080557588496
2021	9.618871032363366
2022	10.55042601276436
2023	13.537369324286711