Year	% of GDP
1977	85.4382211766353
1978	80.2651991306669
1979	82.8903951469245
1980	81.6001832624397
1981	86.8886211749825
1982	81.3401217950347
1983	76.7272278926692
1984	79.8041436478978
1985	76.7713141697258
1986	76.6360325071303
1987	78.7598868070894
1988	71.9230579550148
1989	77.7552071442322
1990	68.229781727916
1991	70.4408084294122
1992	67.2938746141483
1993	62.584091420843
1994	63.2072989164032
1995	80.9981985443978
1996	80.5294028577404
1997	80.1357327705606
1998	80.9153459427665
1999	81.3021931051257
2000	82.1438003036112
2001	83.2228679240416
2002	84.7288617996328
2003	81.021868520694
2004	80.1286317891749
2005	73.9581679136847
2006	81.6251848681737
2007	86.4946558013965
2008	84.8096462528089
2009	73.8237987814968
2010	76.6131651515807
2011	80.3684425302641
2012	75.9974636516539
2013	76.8433696665674
2014	77.5522229935572
2015	74.2983979254889
2016	84.4093888706278