Year	% of GDP
1964	0.93846158177515
1965	1.10215068577294
1966	1.98146126848947
1967	1.46778624705344
1968	1.35830415534567
1969	1.65818727422931
1970	2.40654836544206
1971	2.9073324859619
1972	2.03656394842516
1973	3.66024605164943
1974	6.19002757025658
1975	3.14250515769842
1976	3.41878142065112
1977	5.52436160962511
1978	5.89660633426995
1979	4.41800975598207
1980	5.74729143716008
1981	6.09254734256806
1982	6.12921699619022
1983	5.87126981384245
1984	6.45367053751522
1985	7.71879825547859
1986	7.88909211821032
1987	7.92132101758273
1988	9.00600679471533
1989	9.22156594262744
1990	6.92065555471606
1991	5.11970028407879
1992	5.6751606061602
1993	6.32914518379824
1994	9.88227976584186
1995	8.41488265126011
1996	6.80643599035943
1997	8.09027398245172
1998	8.75921422164865
1999	8.36366677818669
2000	8.73225355921103
2001	9.07882110405561
2002	9.42434809591577
2003	8.92957323809143
2004	9.83125453889624
2005	10.3108982854796
2006	11.7688811553436
2007	12.0334403977749
2008	13.3642855644081
2009	11.1602844544871
2010	11.4913034591569
2011	13.2660333264576
2012	15.7515187002197
2013	16.2164795494539
2014	17.6303957595807
2015	20.9997093510397
2016	20.475172905424
2017	20.5944116818783
2018	21.399885111786
2019	21.4605481727393
2020	25.0510683169135
2021	25.3649175963734
2022	22.8466320420891
2023	22.7255930494529