Year	% of GDP
1960	7.527579493835172
1961	8.894775067287563
1962	9.39390345154786
1963	9.857600569597722
1964	10.324419114423499
1965	10.363319479823033
1966	10.517220831843641
1967	10.166495158183594
1968	10.331317019521585
1969	11.070001771200284
1970	11.834742231218003
1971	12.47781353266281
1972	11.983426279464728
1973	10.818038400861903
1974	10.210888913134966
1975	10.47586442998973
1976	10.379647279949877
1977	10.583861262627497
1978	10.796514227753116
1979	9.727924621118952
1980	9.64916349692303
1981	9.388508170795994
1982	10.720928042564713
1983	10.712333806295653
1984	10.611448728025612
1985	13.39408948970702
1986	12.671943892186135
1987	11.513188948287029
1988	9.8565848746919
1989	9.733071270704714
1990	9.514939929609332
1991	9.248588030984381
1992	8.826168567667057
1993	9.012480201300816
1994	8.170554233737342
1995	8.251187297781756
1996	8.953859705458648
1997	8.759864500176235
1998	9.493646623904251
1999	9.386779713167297
2000	10.504164644115525
2001	11.609926556509718
2002	11.84032888729563
2003	11.4140839970397
2004	10.318670184588006
2005	9.897143233218788
2006	9.906935502721051
2007	9.136127343988361
2008	10.113213911286202
2009	9.92997384864082
2010	9.691568385965995
2011	9.236842637019489
2012	8.857866884688445
2013	9.74421772737465
2014	9.631032021975802
2015	10.19090831587924
2016	10.257613812726625
2017	10.190345231474957
2018	9.970696464986927
2019	10.248984058065162
2020	12.234764636861012
2021	10.604170113756094
2022	9.446424372379337
2023	10.226729440043322