Year	% of GDP
1975	41.329902262815175
1976	26.93581460445587
1977	33.86602743374617
1978	28.789426584979694
1979	26.078164923634418
1980	30.062215380668334
1981	25.375256171186972
1982	27.588122824506073
1983	18.657765804704034
1984	26.608023384464087
1985	30.128607642038187
1986	25.71235333901844
1987	30.926721366290284
1988	22.736558752133053
1989	25.103298838121564
1990	33.87017858599038
1991	22.90329731874081
1992	23.641966616479458
1993	19.894088798455677
1994	17.185106859086066
1995	16.959183289069713
1996	20.11946388543806
1997	20.860199299297566
1998	19.587974883568236
1999	15.43519284991611
2000	14.268589417129037
2001	13.047513541586445
2002	18.256309233981018
2003	19.387964683721847
2004	19.566309284380647
2005	17.843210942406653
2006	14.560395431443634
2007	12.219949387279645
2008	15.956562030359716
2009	13.622797572773438
2010	12.502443125521747
2011	16.237655677154063
2012	17.07141257233992
2013	20.354886482068494
2014	16.97018185321385
2015	16.96031828654362
2016	21.67662334751856
2017	22.157027423774018
2018	21.41202883579039
2019	21.971832923021907
2020	20.590168150063572
2021	12.52266429155494