Year	% of GDP
1981	13.1867709738828
1982	13.7931012752735
1983	15.6575471226196
1984	13.4971909158121
1985	12.9915256903461
1986	14.6505028404583
1987	13.7102035196928
1988	13.0600819271173
1989	12.3817766374711
1990	8.86670137453078
1991	10.1962492614545
1992	8.64855773673812
1993	7.96346484370793
1994	7.06684524994974
1995	6.07642998146878
1996	6.00909772950379
1997	7.35333689015113
1998	9.52486228493853
1999	8.12350899237917
2000	8.99840041313345
2001	11.6729990923575
2002	11.5484513386004
2003	10.6788814286082
2004	13.236040644646
2005	12.0787094776546
2006	11.2482880532194
2007	13.3083668170295
2008	12.8182612731745
2009	13.8059417236634
2010	12.9090826499349
2011	12.6411979046247
2012	12.4048379533717
2013	13.3276584318115
2014	12.2611487830862
2015	13.9113110733076
2016	12.6631127809423
2017	11.5865266138129