Year	% of GDP
1973	66.35862274556565
1974	61.590765338393425
1975	71.97249245219724
1976	67.82432642890515
1977	66.38148667601683
1978	62.15761653051417
1979	48.84189780295685
1980	47.43503332584438
1981	48.229933403434984
1982	49.40125451435088
1983	49.81532779316713
1984	44.03507912400176
1985	42.2889663588127
1986	43.97168857431749
1987	49.35151250374033
1988	52.90464530324
1989	54.26518615284128
1990	58.471257106759325
1991	62.622944496586484
1992	65.73496301061435
1993	70.99288486416559
1994	71.99140840748696
1995	74.7739865850102
1996	76.38403990024938
1997	48.21174096229526
1998	50.08765999045838
1999	49.57397769613489
2000	52.73219612033475
2001	56.06390128194493
2002	55.50175877925857
2003	55.67249035804597
2004	56.60448202100651
2005	59.53823631077042
2006	65.93129902382651
2007	69.03244763305753
2008	74.1763252897587
2009	79.36216935351374
2010	82.48908452657354
2011	83.5911006955995
2012	79.84049251434168
2013	84.93814809827046
2014	79.60014944277891
2015	75.68262236653844
2016	76.22072183293459