Year	% of GDP
1960	12.9368168053512
1961	14.2183460981743
1962	12.9775283194448
1963	14.8335217464853
1964	16.4653159005883
1965	15.9677242489713
1966	17.2065888686722
1967	17.8309239440283
1968	19.0093359882168
1969	19.3458601365906
1970	20.9802008938851
1971	19.6715202503102
1972	20.4652261508896
1973	19.797457723231
1974	15.3711017938163
1975	20.9192669561169
1976	21.6847756438638
1977	21.4902375713923
1979	25.7346218403114
1980	29.6950840426788
1981	26.160504012744
1982	20.6691514309389
1983	19.8190247348227
1984	18.3048229129056
1985	19.2591744563639
1986	22.7818131251761
1987	21.5454775932421
1988	21.3304584477635
1989	22.7084296954428
1990	22.9786641273571
1991	22.4203805178407
1992	23.190952257926
1993	20.8520180655804
1994	19.7057013070391
1995	16.6882373798165
1996	15.1769848941294
1997	16.6054130387962
1998	18.0219203288083
1999	18.0432796681566
2000	26.2497811836331
2001	30.0795827822969
2002	29.1008806292433
2003	32.4332547622327
2004	35.0710958966679
2005	38.3481532262536
2006	44.7948027973118
2007	47.0472761384629
2008	45.3150694428631
2009	49.2122294085468
2010	52.0229498173021
2011	49.2475078971103
2012	49.6173234830957
2013	44.5964991335657
2014	48.9844792976358
2015	56.3719593551977
2016	60.2974934856417