Year	% of GDP
1974	9.422020804225347
1975	10.656893486177953
1976	11.055237912680978
1977	10.80044206737147
1978	11.377335865236905
1979	11.521324797042
1980	10.825982232268085
1981	11.141046854036775
1982	11.48433424204024
1983	11.178533854543616
1984	11.587772239322936
1985	12.527145895769968
1986	13.057929448375823
1987	13.067591157334228
1988	12.847870279779483
1989	13.543691860753665
1990	12.425942739306192
1991	12.884960241606505
1992	12.818381697989395
1993	11.475555848144795
1994	11.892327821503052
1995	12.164076586675185
1996	12.238245266492214
1997	11.96011987715405
1998	10.990370051640708
1999	11.703289102982794
2000	11.70342888408116
2001	11.040050860155146
2002	11.594134710074325
2003	11.853121837175813
2004	12.082921968370778
2005	12.335094245084468
2006	13.316789834350187
2007	14.439595780858749
2008	12.75973079665594
2009	11.420288591877217
2010	13.183596537376285
2011	11.495996009085395
2012	12.599872776482327
2013	12.608993412470063
2014	11.550620644550788
2015	12.415209542581
2016	12.851016989051784
2017	12.726761900525055
2018	13.18853294865103