Year	% of GDP
1972	1.702199716203951
1973	1.5625567489190813
1974	1.4032514479921872
1975	1.5852366304621797
1976	1.4286232663783376
1977	1.409752911058953
1978	1.3350704692233673
1979	1.436660223289743
1980	1.490158862854044
1981	1.4929683515419494
1982	1.4434230590040011
1983	1.4048761435057655
1984	1.381304091388604
1985	1.3074568185189939
1986	1.316807333669689
1987	1.0141050390837558
1988	0.9767017979558285
1989	0.9999658463172242
1990	0.899239086597353
1991	0.8668637988274931
1992	0.7948840921211953
1993	0.7631804691144694
1994	0.7449891571687732
1995	1.496726521194448
1996	1.4039101816535562
1997	1.2641863430444582
1998	1.2659042088885568
1999	1.2420715212093094
2000	1.1767292827446059
2001	1.2079442392674793
2002	1.1849504457225482
2003	1.1254473880765348
2004	1.1566453994759442
2005	1.6671728819632532
2006	1.522717586090441
2007	1.862394466725711
2008	2.01030147169182
2009	1.9482091660851006
2010	1.9169700608969404
2011	1.8253263016710548
2012	1.6968675396914463
2013	1.7763256606306315
2014	1.6246297007195671
2015	1.6771118348276433
2016	1.744161448312321