Year	% of GDP
1972	3.538509599369906
1973	5.162577890551298
1974	24.848496663726802
1975	20.343601635267948
1976	19.30585253346433
1977	20.010874040615747
1978	17.754390904584124
1980	24.95386296237794
1981	6.537975728767863
1982	4.4917625731125685
1983	6.9910294972549725
1984	9.343048710685865
1985	10.88741022027067
1986	5.353700002406163
1987	8.69694563831577
1988	8.027652198137009
1989	13.580818195730616
1990	8.697623372125014
1991	4.966389784156219
1992	6.544346742829933
1993	11.287562039901957
1994	11.199044160714953
1995	10.861488297975335
1996	11.928494733346412
1997	11.27801512122801
1998	6.713736196365937
1999	10.269158599124117
2000	18.224198019529936
2001	14.048323951999555
2002	11.484410737225177
2003	10.148829517666103
2004	14.279707915999081
2005	18.715534879179156
2006	18.462631420767835
2007	17.9067166933088
2008	21.697032592386538
2009	12.252255711688461
2010	15.744718928650704
2011	19.76884215625887
2012	17.933289500011725
2013	15.05593422057275
2014	12.74199219777241
2015	7.24423296012648
2016	7.0078157937213845
2017	9.917454765289914
2018	12.96318316453323
2019	11.023018098541684
2020	6.02300880048392
2021	10.387193391474353