Year	% of GDP
1970	2.4317457418827675
1971	2.435506717603125
1972	2.376652516202672
1973	2.5347697730283096
1974	2.7458464461576595
1975	2.7063856457103785
1976	2.8018396380507866
1977	2.820600761062644
1978	2.855078608215091
1979	2.8569389567291243
1980	3.0980220186350294
1981	3.18455548276433
1982	3.4401094088173627
1983	3.2602851153455195
1984	3.4184554091736876
1985	3.344634763155111
1986	3.6434594839627907
1987	3.9019487293559605
1988	4.001384147009857
1989	4.070668146157637
1990	4.452852387934955
1991	4.591654380738046
1992	4.551825391579287
1993	4.515263337386177
1994	4.576083442336711
1995	4.720089625981168
1996	4.856423574423872
1997	4.920354898460539
1998	4.892992984410918
1999	4.929202801071354
2000	5.062476148556739
2001	4.782407819973089
2002	4.77200884097769
2003	4.801461185620328
2004	5.198754280442092
2005	5.29719736575803
2006	5.590911364362981
2007	6.087530195047363
2008	6.5094717878880655
2009	6.423502529723063
2010	6.76787137140473
2011	7.069724018335699
2012	7.102467889383332
2013	7.0207526555649435
2014	7.088392878338413
2015	6.9292794940524525
2016	6.894581219280302
2017	7.100416875253861
2018	6.927315332362921
2019	6.897773122978319
2020	5.59302066552705
2021	5.765653185757024
2022	6.313063944573259
2023	6.280636973846105