Year	% of GDP
1968	4.540821054582523
1969	7.265339292970337
1970	10.641070622685973
1971	9.07402898289829
1972	19.87361155278253
1973	19.24884069430228
1974	15.008746946030014
1975	22.190115772949547
1976	18.459699000379604
1977	15.893997802533185
1978	16.997961093274768
1979	20.3096195533571
1980	8.890551240146126
1981	10.099609030193225
1982	6.779342471635581
1983	4.995260681517478
1984	-2.0971735984129722
1985	13.438259775312384
1986	16.699493908001383
1987	16.379794514274494
1988	21.429332710917645
1989	18.701755188356568
1990	16.162197036989014
1991	13.94843111190934
1992	11.853542953244826
1993	16.039902141132117
1994	18.31689634382771
1995	17.94657901957005
1996	19.613094948690758
1997	21.093575018774093
1998	25.831077071623977
1999	24.713396343729226
2000	23.129881989825325
2001	23.697074420711377
2002	23.798405144173394
2003	23.6324829374453
2004	24.765897788528516
2005	21.998910074697818
2006	23.02035079777597
2007	22.69907311365908
2008	20.11219828298699
2009	18.16965353310957
2010	18.52283537939004
2011	17.131384800750393
2012	17.561333101823593
2013	18.251243015047983
2014	19.586610355893246
2015	21.34689756988423
2016	21.58884763814381
2017	22.00714809025768
2018	24.04657333284848
2019	24.312877190840727
2020	22.849418663136742
2021	27.856504441578195
2022	27.67987287968853
2023	27.487484686600578