Year	% of GDP
1972	17.79831288943093
1973	17.896330512089442
1974	17.882624286277306
1975	19.470545502889188
1976	19.732445399090004
1977	19.602983150368956
1978	19.123583570158008
1979	18.921088419321038
1980	20.544169737448584
1981	21.00472055081304
1982	22.463139869172366
1983	22.802733488202378
1984	21.47035884816103
1985	22.17480195225651
1986	22.23061202965916
1987	21.37433666686233
1988	21.03032634015718
1989	20.863126996337904
1990	21.775907323303578
1991	23.096287358322137
1992	22.135597054224405
1993	21.73486874579512
1994	20.989090952676342
1995	20.780375527050204
1996	20.205156112445994
1997	19.473467833522268
1998	18.84538981648233
1999	18.245456161328637
2000	17.998929251807276
2001	19.441568161108787
2002	19.902938643171375
2003	20.43664875210919
2004	20.176807288660477
2005	20.495708653017168
2006	20.290561047163614
2007	20.531512334827653
2008	22.300603783956024
2009	25.002579444952925
2010	25.45952186850304
2011	24.705758282780717
2012	23.36596742467303
2013	22.38656628286518
2014	22.080047178639717
2015	21.919860344999773
2016	21.99609351476333
2017	21.753589145739998
2018	21.774302613053255
2019	22.157694313290268
2020	31.428479804714573
2021	30.172195742586997
2022	23.98355546270021