Year	% of GDP
1973	14.40757989276501
1974	13.995711899762425
1975	17.720943074825584
1976	21.91370956365316
1977	23.569101464899937
1978	24.357253813594856
1979	24.4973892037428
1980	23.99451560121973
1981	25.308184633546194
1982	25.603249050533627
1983	25.493932108600596
1984	23.894163417973473
1985	22.593855827511106
1986	20.170052246993784
1987	18.52401938882111
1988	19.470097737999343
1989	19.174126624529446
1990	18.71355557711125
1991	18.444146897811862
1992	18.74013769136444
1993	17.307449963301917
1994	18.533645025902025
1995	18.59985867832517
1996	18.531324381369025
1997	19.55621993252727
1998	19.240845535268264
1999	21.39027929562586
2000	19.825362312990126
2001	19.765597096104052
2002	19.710236832776705
2003	19.389067443590942
2004	19.872193572445468
2005	19.89241380594579
2006	19.564454614797864
2007	18.308615224265413
2008	18.034891329585513
2009	20.953502241599146
2010	22.01843114460785
2011	20.40000362924811
2012	20.356315807485657
2013	21.585500157653062
2014	21.8258977747027
2015	11.391268981507878
2016	23.067123452928822
2017	22.221776173336348
2018	22.57616131363652
2019	22.8420041612902
2020	31.68718606758244
2021	32.93694745482
2022	28.21134239680389