Year	% of GDP
1975	20.58915045009495
1976	19.138175338353037
1977	19.728142396961264
1978	19.48444320827613
1979	18.330850090308335
1980	17.628920504358696
1981	18.9677152330605
1982	15.88259896302662
1983	14.217290137211599
1984	17.402664066568395
1985	20.113449887029063
1986	17.87032443931227
1987	22.636579816494564
1988	25.624126920403516
1989	35.80697092717391
1990	18.95585403120397
1991	18.7329794645523
1992	20.19838357785243
1993	20.25436121529043
1994	19.115040360613268
1995	14.439362707423125
1996	14.041321016100468
1997	13.711158574772009
1998	13.890452939410197
1999	12.736901451250182
2000	13.991703128315214
2001	13.594597375319994
2002	15.40587226964361
2003	16.417941808670435
2004	18.855018861684663
2005	18.114095533966392
2006	18.40981632275202
2007	19.34636031516673
2008	19.226846663099963
2009	16.38036502504784
2010	17.802399356614114
2011	18.601266431145365
2012	17.678108528340992
2013	18.151690830816367
2014	16.134404993561613
2015	14.529347180165718
2016	13.421753006846071
2017	13.57776968991443
2018	12.70741995334427
2019	12.250795832271104
2020	14.793329184373254
2021	17.156479763583782
2022	15.826797880425461
2023	15.58974482133803