Year	% of GDP
1964	5.509090582970587
1965	5.292062798000756
1966	5.539380147368371
1967	5.824278466042207
1968	6.131410619236139
1969	6.205953177034712
1972	7.71797636151409
1974	7.448570240093414
1975	7.118719795579958
1976	7.9223097047091775
1977	8.369755836757431
1978	8.997130804578925
1979	9.55786613616629
1980	9.890089968044967
1981	9.687910487071392
1982	9.533120228667006
1983	9.400348315652156
1984	9.273864764135189
1985	9.174305846071931
1986	9.747943638757183
1987	10.372646010176856
1988	10.068458188285147
1989	10.316640828038505
1990	9.595496521563366
1991	8.813051724169979
1992	8.928149484970975
1993	8.825672945209995
1994	8.420018205153589
1995	12.85762498755932
1996	13.137422399524729
1997	12.798295606699293
1998	13.768401698370695
1999	13.766325157892442
2000	12.546345113909222
2001	11.993062900257824
2002	11.821712063554143
2003	11.922025594093702
2004	12.40340425273293
2005	12.658745446714285
2006	13.403438587349521
2007	13.98807689176674
2008	15.243045806979135
2009	17.91817985704406
2010	18.427173104276644
2011	18.34576444140537
2012	19.745330316613867
2013	20.550275659839443
2014	22.673383157820837
2015	25.441463012123734
2016	26.175432059481736
2017	27.0645999838475
2018	27.800538763393252
2019	28.502893018250795
2020	30.279865408744307
2021	31.46348063285501
2022	32.75574586851891