Year	% of GDP
1960	87.78847346684073
1961	88.66521769562449
1962	89.20113382548928
1963	89.09803005466603
1964	87.07419618478157
1965	88.17634372444365
1966	87.6291865842292
1967	87.55361837612055
1968	89.58410078779568
1969	91.07487346495004
1970	90.30197496360707
1971	86.10835876769221
1972	82.7760148420645
1973	80.53840982665912
1974	69.38639875638319
1975	74.70666619396926
1976	80.28210571315435
1977	84.42567890949091
1978	89.74478235931986
1979	91.79132020263404
1980	95.33029622572418
1981	96.91104981140693
1982	112.19469308775139
1983	117.0320373129451
1984	118.62878979718221
1985	122.94155705827279
1986	124.11086981460599
1987	130.67395957826164
1988	136.91508643529932
1989	143.93505141304414
1990	144.3070947283823
1991	143.15762463772222
1992	143.26383506816882
1993	142.77049985087936
1994	144.19686163536412
1995	146.6098871744669
1996	144.6754475372267
1997	146.23815166700683
1998	144.48618036578247
1999	151.18250817240693
2000	141.86366927340325
2001	136.660989970166
2002	137.50826716659657
2003	140.88675463340147
2004	142.70395699742016
2005	146.36430186012984
2006	150.17566085273126
2007	153.59731820096536
2008	145.8567287303238
2009	155.1184724723161
2010	153.92851064776315
2011	156.31169397471865
2012	162.22219461213461
2013	164.05420967220797
2014	165.11743709767245
2015	166.77011328313927
2016	170.37823170505084