Year	% of GDP
1972	6.053134748918184
1973	6.435516888433981
1974	6.979526267218102
1975	7.8989775505667925
1976	5.48399342022017
1978	4.558127745860087
1979	2.6405761257001528
1980	2.6503778859095144
1981	2.738947006467142
1982	1.9449887509978954
1983	1.5519597423161182
1984	1.7983439710194928
1985	1.7762294768752624
1986	2.008919783810536
1987	5.808441500473139
1988	6.830946256525776
1989	5.9490953695185524
1990	4.6389029735518
1991	3.049730352724698
1992	3.2242970007324456
1993	4.234953018728844
1994	4.695799333424888
1995	3.9146198494104807
1996	3.970281347621502
1997	2.4680518992304243
1998	2.1301809188092995
1999	2.7020988363706664
2000	2.1002638331473116
2001	2.429472686508114
2002	2.4349193876134727
2003	1.5454330118552007
2004	2.219374059931316
2005	2.0735672385694883
2006	2.586379660407586
2007	3.031840316981473
2008	3.924452494014221
2009	2.67979077047762
2010	3.016133943860367
2011	2.905299623502577
2012	5.163788179896665
2013	2.8741726676804853
2014	2.130804731526712
2015	2.277943447245127
2016	1.8230721973564112