Year	% of GDP
1980	60.41997069745405
1981	58.43139198990396
1982	54.6923962316504
1983	53.903962286569275
1984	51.82566100479219
1985	53.89720298040038
1986	47.693519187275626
1987	47.60733256962963
1988	45.51132220357793
1989	43.407306231933006
1990	44.928492521708854
1991	27.85231141656228
1992	27.054388566901565
1993	30.917644332602105
1994	35.65980585519713
1995	35.02993389431728
1996	35.02253779941487
1997	35.81500338939369
1998	31.525870496709206
1999	32.99900900991287
2000	39.127257787624906
2001	35.90465326439608
2002	37.2312290000998
2003	39.770372202596945
2004	36.99291732565336
2005	46.20984504283639
2006	52.56151737836296
2007	56.28714592043552
2008	54.220413145345645
2009	45.11215951265947
2010	45.88873408569753
2011	47.08493530499076
2012	46.552681516795914
2013	43.67731821584916
2014	43.378249419696694
2015	36.96651890232857
2016	37.96421753167767
2017	41.33313412351559
2018	42.963455867547275
2019	43.90795604539083
2020	40.73273458033004
2021	45.03732195005057