Year	% of GDP
1976	32.38716502115656
1977	33.12572421784473
1978	33.45907204828367
1979	34.72773536895674
1980	40.38973302429393
1981	43.64213723595196
1982	40.61572025937822
1983	35.79984327773425
1984	39.07943656071634
1985	39.6579721912108
1986	28.301718366436063
1987	33.069488782962345
1988	43.445692883895134
1989	56.050298907441764
1990	59.83484842997356
1991	57.39012846517918
1992	50.23266397075117
1993	50.33512769024817
1994	47.86224496821426
1995	51.72121237830615
1996	52.878898933137876
1997	49.24759893329181
1998	44.795104994830474
1999	43.310785179031896
2000	41.827395935786086
2001	42.13429294278485
2002	47.42125404768914
2003	47.37227993968487
2004	52.18949684213129
2005	52.704580084252036
2006	53.87432789403675
2007	54.23491299366102
2008	56.05049656585766
2009	45.075471711109216
2010	46.997142642245386
2011	46.55057762955462
2012	45.22598540690395
2013	41.29560357365171
2014	42.13390770504639
2015	36.544437022526736
2016	34.39521006556793
2017	34.706531867124255
2018	35.12775863846613
2019	36.67120296230655
2020	24.227073524220884
2021	30.307057987188905