Year	% of GDP
1972	8.111635573415574
1973	5.806833365367697
1974	7.18037377820737
1975	4.462247452024641
1976	2.0153802484044325
1977	2.6200229495856417
1978	3.0321508663189256
1979	1.7902265415545233
1980	1.6513137390711565
1981	1.4399444596570548
1982	1.5915104265931383
1983	1.7376979777504493
1984	2.0482020854615413
1985	2.3510315605411
1986	2.3752623391991685
1987	1.8132076634377505
1988	1.9712805561763393
1989	1.79406233829189
1990	1.7028800816664877
1991	1.9289066047245345
1992	2.207401951982457
1993	2.606917525486867
1994	2.6509363702718556
1995	2.4502779972810336
1996	2.7020859824286956
1997	2.6922146570098
1998	2.79537560039905
1999	2.6793347972505543
2000	2.1243855606954205
2001	2.131601294591765
2002	2.091806088112871
2003	1.893403374966373
2004	1.7065406704291908
2005	1.7278159715268093
2006	1.6622223573343677
2007	1.970124512300635
2008	2.12195918278623
2009	2.5219454984857013
2010	2.092182924961554
2011	2.125842245552439
2012	2.032086658587345
2013	1.9513041776583098
2014	1.9914961611678421
2015	2.2797043621494413
2016	2.0923804796787673