Year	% of GDP
1970	7.89139762018415
1971	7.73825551275711
1972	9.69187373577921
1973	11.5412438120884
1974	28.4844510661463
1975	23.7050346704932
1976	24.6730137652963
1977	24.2575666522682
1978	21.2858880613224
1979	39.0840713137545
1980	31.4905481132839
1981	26.0704654087533
1982	19.2755546256023
1983	19.2386683793611
1984	17.7269351262912
1985	16.2532794265488
1986	7.79806706971035
1987	10.3843346447279
1988	10.3023656851285
1989	15.0746904253939
1990	18.3773769843497
1991	17.1441948451787
1992	16.3874531653913
1993	14.9124077932801
1994	16.433844006441
1995	18.8771195086714
1996	21.1719242100152
1997	20.3327344060761
1998	14.6270810412232
1999	18.6233051712637
2000	26.6868973861091
2001	23.6309412932778
2002	23.4709385218627
2003	24.452322612612
2004	26.1573130077943
2005	32.6800315430258
2006	34.1913224229422
2007	32.0600728476928
2008	32.865091355443
2009	24.2022509333631
2010	25.5383244245491
2011	28.5812899587159
2012	26.2525144621236
2013	24.2231338959379
2014	22.6123097835033
2015	14.9252527493911
2016	12.8191814025545
2017	15.372392970843
2018	20.7172028374976
2019	18.5236789388593
2020	14.0343770936226
2021	22.5902703479201