Year	% of GDP
1985	24.7800338697512
1986	28.6819304696878
1987	27.0563697172286
1988	24.3270309962616
1989	27.3992784847687
1990	27.8772708724322
1991	28.6459678529137
1994	27.6928266442469
1995	24.6776580872575
1996	25.1125933702556
1997	24.3731960416197
1998	25.82970149987
1999	24.9713545729528
2000	21.0392670037745
2001	20.7752804402565
2002	19.9914674803993
2003	21.2664220029543
2004	20.1018407323044
2005	21.4386006958981
2006	22.0402269550327
2007	18.8426752905579
2008	20.2468553111903
2009	21.6514830597164
2010	20.4202210464379
2011	19.3932786967806
2012	19.2019897212055
2013	21.5693641924029
2014	23.2410873960839
2015	21.5848123436347
2016	20.735330209075
2017	19.2589134456046