Year	% of GDP
1977	34.127765892605
1978	35.03159652952805
1979	34.606729303236584
1980	32.17987291242516
1981	33.23448869225512
1982	35.48598215580362
1983	33.79423270474866
1984	36.35582273518271
1985	38.4612767969342
1986	37.16416220427665
1987	37.56447942900545
1988	37.43008817585408
1989	39.135930506678214
1990	36.7831727120489
1991	35.718661765600814
1992	37.569359700589324
1993	36.592632096332075
1994	37.844783146607256
1995	37.81062062586102
1996	38.68318398419373
1997	37.70976426491064
1998	38.53698275324976
1999	38.643568898953795
2000	40.04234142828799
2001	39.2544382080048
2002	37.77262435825205
2003	37.1355634481152
2004	41.21055927798368
2005	41.081767742245205
2006	40.339818764806004
2007	41.56552903181989
2008	45.893575672642854
2009	47.47044547594714
2010	46.811937791405306
2011	46.16867512338123
2012	51.32193402956959
2013	53.908322891166456
2014	54.154106585809124
2015	55.93999236219823
2016	58.57365624029028
2017	58.79863172414698
2018	58.59170669875142
2019	61.8081857368174
2020	59.80121869470057
2021	63.893525562086005
2022	64.53701132199016