Year	% of GDP
1972	4.831009587128494
1973	4.895574942225319
1974	4.4077349159763735
1975	10.130036408661189
1976	8.612358419421632
1977	5.348603029461362
1978	6.133352518407702
1980	5.460202661015345
1981	3.495774087722499
1982	4.158972716027736
1983	5.7109526245982
1984	7.157891563870749
1985	7.293769765112097
1986	8.037815858571493
1987	8.780987644656445
1988	6.742333479799009
1989	9.688008098262472
1990	29.51152478660992
1991	27.808795203723975
1992	12.734869716550573
1993	12.529676697824744
1994	12.00661305422148
1995	6.388647308710367
1996	7.856037320803496
1997	8.63664363889917
1998	10.058757505024401
1999	10.754563507059027
2000	8.954414209114711
2001	7.81200546076894
2002	9.138407552556009
2003	10.33579854065383
2004	6.908205790029855
2005	8.654601769370398
2006	8.461417737299305
2007	7.256482729228337
2008	2.152358976103044
2009	1.942648618678311
2010	1.989214945437455
2011	2.4511940109507737
2012	2.9772689003688355
2013	2.521265578746578
2014	3.191914246441543
2015	3.769518122012202
2016	2.285761938801015