Year	% of GDP
1961	70.49405306495883
1962	69.38250428816467
1963	66.47727272727273
1964	64.34336023477623
1965	64.10673608851285
1966	65.13892867373245
1967	65.56796004869167
1968	66.20499395083243
1969	66.00973832171407
1970	63.63636994511278
1971	62.68939794488572
1972	58.24849738467329
1973	47.77521591778725
1974	47.29531448694121
1975	53.67170703464248
1976	52.152515614259606
1977	53.37697343088179
1978	55.89109276558766
1979	54.55103181728336
1980	61.5479187401206
1981	65.67927075898167
1982	63.91493254058999
1983	64.52275379229872
1984	63.45642135168412
1985	67.01455934101071
1986	65.0585079500836
1987	63.588276060269635
1988	60.553294848742944
1989	64.41540532554093
1990	59.04362525193421
1991	58.83348125138674
1992	50.76249112005683
1993	42.02913439214316
1994	46.25807099072383
1995	43.6421892908454
1996	46.34175607458755
1997	60.566091304593485
1998	58.81138064483059
1999	56.452971160598985
2000	44.60523326280326
2001	47.73114569606495
2002	60.56838831452962
2003	49.433855437440904
2004	51.444745900184586