Year	% of GDP
1972	6.794367180379618
1973	6.468733455914472
1974	6.623875027198799
1975	6.696349436816952
1976	7.685615007616003
1977	7.380171372210004
1978	7.5564250435553895
1979	7.126461968327645
1980	7.292197958302407
1981	7.307528858853872
1982	7.600636453226983
1983	7.6354061124690285
1984	7.792768897584139
1985	7.672089447593058
1986	8.309256435844945
1987	7.966643697506852
1988	8.33860184481515
1989	7.8248655333472446
1990	7.953722156036402
1991	7.760840096214099
1992	7.919358446695587
1993	7.3396514658956455
1994	7.855746359674335
1995	7.915461485745524
1996	8.338045068208654
1997	8.323929212345671
1998	9.261956958868048
1999	8.91888653246466
2000	10.032345418206036
2001	8.970632630094215
2002	8.955704271672904
2003	8.977577186292706
2004	9.020393896534998
2005	9.126160728378279
2006	9.194038065430043
2007	9.0656237703257
2008	9.587141895076028
2009	9.348527986730424
2010	9.36400803897084
2011	9.321952188282864
2012	9.169074742064302
2013	9.256214098769755
2014	9.087339531974818
2015	9.556179016647478
2016	9.404603140741525
2017	10.061635292289797
2018	9.691023944961017
2019	9.90716918660662
2020	9.344871149953658
2021	10.093677261202364
2022	9.100682290441563