Year	% of GDP
1960	18.272383336226355
1961	17.97017625407384
1962	18.409839090778547
1963	18.7432410031366
1964	19.571102702073738
1965	21.74631271826189
1966	27.961030734442165
1967	30.602307452190942
1968	31.822415724905678
1969	33.133988566345614
1970	32.8815114231267
1971	35.176064949127685
1972	38.38035951253489
1973	40.301259273964185
1974	41.15411800442094
1975	42.57924413916945
1976	44.55941902573575
1977	47.88895158969801
1978	52.825978023195866
1979	55.555582196330064
1980	56.3634009843864
1981	69.87034352450605
1982	68.06386711353724
1983	63.0073389095121
1984	62.61878065569086
1985	63.228585656374555
1986	63.30478704213584
1987	64.08670186093158
1988	66.22028604516872
1989	69.80072336984927
1990	73.06804735003976
1991	74.98892091887262
1992	76.52859823282797
1993	75.53200176162626
1994	74.75150636638669
1995	73.95051351517097
1996	78.6330849908238
1997	81.53126877973746
1998	79.86253981316383
1999	77.2501108722246
2000	73.98773849229204
2001	121.35283176137033
2002	117.83945640691404
2003	113.2409803768424
2004	115.44331313954079
2005	121.6610929582934
2006	134.12080712347
2007	123.53364806105245
2008	124.09777168927727